One of my earliest memories in science was of the Foucault's pendulum in the London Science Museum, it was suspended down the stairwell in the entrance. Sadly no longer there. Many years later after taking a physics class on a visit, and finding it was gone, we set one up in a stair well in the science block.
Thats crazy you say that, I got here by thinking of my earliest memory, I was in a science center fo some sort and seeing one of these. I lived outside of Modesto California, wonder if there is a museum there. Interesting the things that stick in your head as a child.
Funny, this is also my earliest childhood memory of the Museum of Science, Boston, Massachusetts, well over 50 years ago. That and the Neanderthal cave mock up!
Did it work and also what happens if it is physicaly stopped by hand to a ded stop standstill position then gently let go without moving it? Will it start moving again by itself?
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion. If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
@@trinity6009 "alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion." And there it is folks, dumber than an empty breadbasket. Thanks for the lolz.
@@leifnelson-melby1512 what do i need to prove to you? An opinion requires proof? Ok, I can prove that you are out of your depth in a discussion requiring logic.
To the doubters: Step 1: sit in office chair Step 2: make pendulum using a string and weight (or just headphones). Step 3: sitting still, hold the string end up and drop the weight so it swings freely (it goes back and forth in a plane) Step 4: repeat step 3 but this time spin yourself in the chair first. When u drop the weight this time, the plane of the pendulum's motion will now rotate (at least it will appear to in the "chair" frame of reference) and the pendulum motion will appear erratic. This is analogous to the earth-pendulum subject. Note: if the pendulum motion in Step 4 results the weight hitting u in the face, just know that's physics hitting u in the face.
Thanks for the suggestion. That's a nice experiment that everyone can try. Certainly the basic mechanism of pendulums are beyond doubt, but some may try to argue that something other than Earth's rotation is being measured. I have to agree with Tsa though - it's "you" not "u".
It will stop eventually, its just very heavy and the air doesn't slow it down fast enough to notice. I imagine there will also be some friction at the top of the cable where it is hanging from. Now, if you could encase this inside a vacuum chamber, reducing air friction, it will swing much much longer.
2:18 he says it can be used to detect "the rotation -- the revolution of the earth around the sun" or even the solar system around the galaxy. But what is he talking about? The orbit around the sun or around the galaxy is not a "rotation", it's freefall - it shouldn't be possible to detect in any local way without an external reference (like the stars, galaxies or CMB)
@@BoogWar01 There are a few ways to do this, most common is a magnet under the floor to give the weight a gentle push to keep it going. Many deniers like to claim "Oh, see, there's a magnet! It's fake!" But the magnet is not causing the precession. A heavy weight on a long rope will swing all on its own long enough to witness the phenomenon, no magnets necessary. It'll eventually stop swinging but not before it's definitively proven the earth is rotating.
@@jasonmack760 what troubled me is the lack of decay of the oscillation. That too would be noticeable over the time the oscillation takes place. Video showed NO DECAY (as so much as is visible to my eye) but no explanation was given. That’s all I am saying.
Short answer: it's powered. Longer answer, from Dartmouth's website: The pendulum uses an electronic mechanism to keep it going; otherwise it would lose its energy due to friction and stop after a few hours.
It is a question of integrals, in effect. Which level are you looking at determines what factors you measure. The rotation of the Earth on its access? The wobble of the Earth as it orbits the sun? The orbit of the Earth around the sun? The influence of the other bodies within our solar system? The rotation of the solar system around the galactic center? The rotation (presumably) of the galaxy around a universal center, whatever that may be? Seems like each of these could be measured independently as long as you know what motion of pertubation to evaluate.
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion. If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
One question on the North Pole situation. Since the pendulum is hung from a structure connected to earth and initially the structure and pendulum are all rotating with earth, shouldn't the plane of oscillation also rotate and for an observer on earth, it should appear as if the plane of oscillation appear to be static?
I would like to say a few words about the pendulum and explain in detail why the pendulum is complete nonsense and obviously cannot work. First.-When a pendulum, constructed according to the plan of M. Foucault, is allowed to vibrate, its plane of vibration is often variable-not always. The variation when it does occur is not uniform-is not always the same in the same place; nor always the same either in its rate or velocity, or in its direction. It cannot therefore be taken as evidence; for that which is inconstant cannot be used in favor of or against any given proposition. It therefore is not evidence and proves nothing! Secondly.-If the plane of vibration is observed to change, where is the connection between such change and the supposed motion of the Earth? What principle of reasoning guides the experimenter to the conclusion that it is the Earth which moves underneath the pendulum, and not the pendulum which moves over the Earth? What logical right or necessity forces one conclusion in preference to the other? Thirdly.-Why was not the peculiar arrangement of the point of suspension of the pendulum specially considered, in regard to its possible influence upon the plane of oscillation? Was it not known, or was it overlooked, or was it, in the climax of theoretical revelry, ignored that a “ball-and-socket” joint is one which facilitates circular motion more readily than any other? and that a pendulum so suspended (as was M. Foucault's), could not, after passing over one arc of vibration, return through the same arc without there being many chances to one that its globular point of suspension would slightly turn or twist in its bed, and therefore give to the return or backward oscillation a slight change of direction? Let the immediate cause of the pendulum's liability to change its plane of vibration be traced; and it will be found not to have the slightest connection with the motion or non-motion of the surface over which it vibrates. I tested it and I would like to invite anyone who is interested to do so. If the earth's rotation were real, the pendulum would swing by itself and would not need a suspension point. In addition, the rotation of the earth in orbit and the speed at which it should fly through nothing are not taken into account either. Now a few words about the pendulums that are currently in museums all over the world. These have completely different properties because they run with a prepared electronic mechanism. The size and weight of the ball also has an influence. Anyone who is interested should like to look at such a pendulum and read the warning sign in front of it and realize that I am telling the truth. The pendulum proves nothing because it's a sleight of hand! Finally I would like to add a quote from 1861 from the notes of Prof. Dr. Samuel Birley Rowbotham to show that Leon Foucault was not only a liar but also a thief: "At a recent meeting of the French Academy of sciences, “M. Dehaut sent in a note, stating that M. Foucault ( whose experiments on the pendulum effected a few years ago at the Pantheon, are of European notoriety) is not the first discoverer of the fact that the plane of oscillation of the free pendulum is invariable; but that the honor of the discovery is due to Poinsinet de Sivry, who, in 1782, stated, in a note to his translation of 'Pliny,' that a mariner's compass might be constructed without a magnet, by making a pendulum and setting it in motion in a given direction; because, provided the motion were continually kept up, the pendulum would continue to oscillate in the same direction, no matter by how many points, or how often the ship might happen to change her course.” The cited work dates from 1861 and is called "Zetetic astronomy, Earth not a globe! An experimental inquiry into the true figure of the Earth." The tricky part is that the plane of vibration has nothing whatever to do with the meridian longitude nor with the Earth’s motion, but followed the plane of the magnetic meridian. That's why you can use it to determine latitudes. But it would be like hanging a compass on a thread and then saying that the earth rotates. Furthermore, the pendulum swings infinitely long thanks to a prepared mechanism. This is a kind of magnet in the ball, which gives the apparatus a push for more momentum every now and then, and a so-called Charron ring, which simply eliminates the variances of the vibration level. You have to imagine this. It's pure scam!
@@johnpurefeeling6258 "I would like to say a few words about the pendulum and explain in detail why the pendulum is complete nonsense " So you can't explain that precession occurs as a function of latitude all over the globe as observed for over a century. Nice word salad, but weak sauce. (And plagiarizing some other idiot).
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion. If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
The pendulum measures rotation relative to a frame that is not rotating. This may sound circular, but there is actually a fundamental difference between a rotating and a non-rotating frame. In a rotating frame, for example, you can feel the effects of a centrifugal force, which is absent in a non-rotating frame.
I just read The Accidental Universe by Alan Lightman and he briefly mentioned this experiment in the last chapter of his book. He was talking about all the great revolutions of science and how we came to our current understanding of the universe as a whole. Brilliant book. It's a riveting and engaging read. You'll enjoy it.
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion. If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
The pendulum doesn't know squat, it's plane of motion is independent; I would surmise that the friction at the pivot is far too great to even "react" to our solar system's rotation in the Milky Way, let alone the universe. There's an exponential difference between 1-rotation/24hrs and 1-rotation/240,000yrs.
@@sarategiun2026.....I figured out we live on a large spheroid of some sort before I saw my first globe. I also know we're orbiting our Sun since I can observe the stars rotate 361° from night to night (90° every quarter) The fact that our Sun's N-S-N movement stops for days at the Solstices and moves the most at the Equinoxes works out with our 23° tilt of you can conceptualize the geometry. I've watched the pendulum at Griffith Park many times and it rotates noticeably slower than the one I saw in Paris twice, but that still doesn't mean they "know" anything, as Mr LaBelle here clearly states. And don't forget, the Equinox is coming up shortly, when everybody across the globe observes the Sun rise at 90°, and set at 270°!
@@bhaggen i'm not sure why you just wrote all that. i wasn't disagreeing with you...you just said "the pendulum doesn't know squat" .. and i disagree because this experiment is the one thing i can use in a debate with a flat earther and they can't debunk it or back it up using their model. so i appreciate this experiment, that's all.
@@sarategiun2026.....I may "know" how the pendulum works, but the pendulum doesn't "know" squat any more than Earth "knows" its role in the solar system. "Know" refers to knowledge which requires an active intelligence. Know this! The flat-earth is rooted in a belief system that's based on a gross misinterpretation of scripture; they're afraid that if Earth is merely a ball orbiting one of billions of stars in an endless universe, then Man would be unimportant to God, so don't waste your time. The pendulum is an exhibit, NOT an experiment and is a weak argument for the globe since it must be kept in motion electronically and its plane of motion can be changed at will. I gave you 3 indisputable facts for the spheroid which can be observed by anyone, anywhere, anytime. I guarantee that in 3 days, you too will observe our Sun rise 90° East and set 270° West, which can only occur on a globe...Just observe
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion. If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
@@trinity6009 That makes no sense, as the momentum of the pendulum's oscillation has nothing to do with the rotation of the pendulum's surroundings. They are two different forces on the same object. The only way a pendulum would continue is if all external resistance were removed.
@MilitantPacifist allias tested and repeated his experiment getting the same results in both 1954 and 1959 and published his findings from two different eclipses. Now I'm not saying it's a forgone conclusion, however of the times it has been tested it has shown allias effect more than it hasn't meaning there is at least something to it. Even if it effected 2 out of 6 times (which the numbers are actually closer to the opposite) it means the earth's movement is not the cause of the pendulums movement. A simple loss of momentum and wind resistance will make the pendulum slowly lose its path. If you let the thing keep going eventually it stops, it's not like it's got infinite energy moving in the exact same direction. If you were to swing a pendulum the exact same speed 20 times and didnt record the exact same movement as the earth's movement is constant then it's not being caused by the earth's movement. This has listed at the bottom times this was repeated, it was observed on numerous occasions, not observed only two times and one put maybe as results. science.nasa.gov/science-news/science-at-nasa/1999/ast06aug99_1
@MilitantPacifist as I pointed out the results were posted. I'm not going on the article I'm going on the results. You claimed it hadn't been repeated you were wrong. It's been repeated on more attempts and observed on more attempts than it was failed to be observed. Once again if it effected it even once its proof that the earth's movement is not measured by a pendulum. This is a sad proof of anything and people need to admit it, it proves absolutely nothing about the earth. Its hilarious to think real "scientists" cant see the major flaws in this kids experiment. Many explanations can be made for the movement of a pendulum, sticking with the 1st one because it supports your theory isnt science it's called bias. lol I used a sight youd have to accept as accurate or look like you dont trust your science authority.
@MilitantPacifist lol oh expiremental error creeps in? But this this PROOF the earth moves, I thought not being able to repeat it everytime was what you said was the problem with allias effect? You do see the double standard you've walked into right? Surely you see the hypocrisy? You destroyed your own argument with your own argument.
@MilitantPacifist exactly only an ignorant hypocrite can't see when they are being a hypocrite. You were proven wrong about the allias effect being repeated by a flat earther. Your cognitive dissonance is strong. You can see clearly that someone has found a major flaw in this whole pendulum argument and you refuse to accept its unbiased results which were observed and repeated using the scientific method. Pseudoscience refuses results which don't agree with their theories and use excuses to explain them away. Lol, I love this looks flat comment. Please show one example of empirical evidence that the earth curves. You kinda need to have that to claim the globe is scientific. Empirical evidence meaning anyone can test it through observation or experience. Show me one please. You jumping straight to insults also a tactic of pseudoscience. Acting like I'm dumb for not believing what you were told to believe isnt an argument. Nothing you know about the globe was learned it was all told to you in a classroom, thate not learning that's indoctrination. If they wanted to teach you about reality they would have done it outside as science is the study of the natural world.
2:41 Foucault Pendulum is sensitive about rotation but rotation about what? I don't understand why is this question such a speculation. Isn't motion of the pendulum as a result of a pseudo force in an accelerated frame of reference while the earth is rotating, revolving and precessing around it's axis. So shouldn't it be rotation about its own axis..
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion. If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
Doesn't it stand to reason that there is an "absolute" in angular velocity? There is no absolute linear motion, but this pendulum kinda shows that there is an "absolute" value to be derived for angular velocity. Analogous to "the universe as a whole" is just the zero reference of rotation. Am I missing something?
I took the liberty of paraphrasing the Professor's question, a bit: "How does this pendulum, here, on our little spinning planet, going around its sun, going around the Milky Way, etc, know something about the wider universe?" It doesn't. Like the ratio of pi (or any other constant you care for), it only illustrates the nature of the universe itself. By building the pendulum, we just gave ourselves a tool to see what the universe is doing; what is otherwise too small an effect for us to perceive in our daily lives, but, nonetheless, has been there all along because it's just the way the universe works. Foucault gave us a brilliant way to illustrate the action of the universe. Maybe that's why these Foucault Pendulum exhibits commands such attention? Because at some instinctive level we know we are seeing something amazing, even if we can't explain why. Watching a ball swing back and forth? Not most people's first idea for something interesting to do. But set one up and watch: most people will stop and observe, at least for a few minutes. Or in my case, hours.
2:30 - Suitably placed Foucault's Pendulum is sensitive to rotation of any gravitational force capable of influencing it. Indeed, the Foucault's Pendulum in this video is responding to the gravitational influence from the Milky Way's center, however since the rotation is over hundreds of millions of earth years, it's seems non-existent, but in reality the pendulum is changing direction on a extremely minutiae level, the length of change is approximated to many fractions of a sub-atomic particle. Or in other words we must remember, BARY-CENTER, is always at play, even at the grandest of scales like galaxies and superclusters!
It's not responding to gravity, is it? Rather, the Pendulum remains fixed in its plane of inertia. That merely allows us to measure other motions relative to an inertial reference frame.
Does the mechanism that swings the pendulum have any effect on the outcome? How do you determine at what speed does the pendulum swings? How do you determine at what height the pendulum is hung?
Same here lol... like this doesn't prove much of anything to me. It's all dependent on which direction you start it in. And it probably has none to do with air pressure than anything else
It sounds like you're demonstrating a misunderstanding of what the experiment shows. Firstly, about setting the pendulum swinging. The experiment isn't somehow adding energy to the pendulum; it's about showing the consequences of the energy it already has. At its most active points, the poles, the pendulum would never start on its own, and even where it could, it would simply take too long and be a ridiculously subtle motion. So we do actively add energy by raising the pendulum; for precision we drop it as predictably straight as possible, originally by burning a string that was pulling the pendulum aside. The key is that the swing starts back and forth, straight through the center below the attachment point, not around in an oval. About air pressure. Yes, the pendulum is affected by air; specifically, air resistance slows its motion. Usually a very heavy and long (thus slow) pendulum is moved to reduce this effect, but it's still enough to stop it in a matter of hours. Air currents would also disturb the experiment, but as it's swinging back and forth, a consistent stream would not change the result. Originally, this was simply a factor unreasonable to eliminate, but today we have a few options. We could run the pendulum in a low pressure chamber, like the ZARM drop tower. Or we could device a means to add more energy without redirecting the pendulum. The latter is what museum demonstrations will tend to do, so the pendulum is both accessible and visibly operating for each visitor. It's a tricky subject in itself to make the motor not affect the pendulum's direction. Now, all that said, this is an experiment easy to replicate. You need string, a bob, a tall place (e.g. a spiral staircase with some space in the middle), and a lot of patience. It has been done many times, but doing it yourself is a great way to verify. You might learn something, if only that it's challenging to eliminate variables.
@@theseattlegreen1871 So you elected to demonstrate that you're not just a toxic reality denier, but uncouth as well. Who are you trying to impress with that?
Coriolis is not the cause of drift. Here are the three main points: 1) heaver ball equals faster drift, but this should not be the case if Coriolis is the explanation. 2) starting the swing parallel to the spin, does not prevent drift, there should be no drift if Coriolis is the cause of drift 3) similar to point 2, any swing not parallel to the spin, does not stop drifting once it lines up with spin, it should stop if Coriolis was the cause of drift
How does the pendulum not turn with the Earth? It’s still attached to the roof which moves with the Earth so shouldn’t it just follow the same rotation pattern as the Earth?
The Earth is fixed, this is just a convenient phenomenon that they use to try and explain the ridiculous notion that the Earth is moving and spinning faster than a bullet.
There's no question about the rotation's relativity. The pendulum forms a partial gyroscope. It will detect rotation out of axis, but is not sensitive to rotation in its own axis.
I hope someone will answer to this question: if the pendulum is attached to a building, and therfore rotating along with the earth, shouldn't the pendulum rotate too and draw the same straight line at any time?
cicciobau I think a good way to understand it is to think about a glass of water. If you rotate the glass, the water will rotate too, but at a different speed and a time delay. So if you put such a pendulum in a house on the north pole, then the earth rotates the house and what you observe is the pendulum swinging in the same position, and everything around it is spinning (just like water in a glass after you spin the glass). The more you move towards the equator, the less the house will rotate around its axis
+cicciobau No, because the pendulum is free to swing in any direction because of the way it is mounted. If you rotated the building the pendulum would not rotate with it, but would swing in the same plane.
Kimlin Awwsome so the pendulum is moving with earth but at a slower rate than us... and thats why its path changes? Im kind of a dumbass so i cant understabd what you said very well
That's why I never walk near construction sites after hours where wrecking balls are. I don't want to get hit in the head by one because of the earth spinning. *note sarcasm
Exactly. In museums they use electro magnets to keep it going. Also if you look up the way it rotates in the North and south Pole it's the opposite to storms. And yet both are meant to prove earths rotation yet spin in different directions in the same poles 🤔 somethings a miss here.
@ZDProletariat hmm I'm not sure about that, maybe. However if the earth rotates underneath the pendulum, then why doesn't it rotate under a hovering helicopter? 🤔
@@Rachie-nj3oi The Pendulum moves with the Earth, quite obviously, it stays where you put it as the Earth moves. The plane of inertia doesn't move. Put the helicopter on a string and swing it for a day, it'll do the same thing the Foucault Pendulum does.
For those that don’t understand this: Tie a fishing line through a lug nut. Tie the other end to a broomstick. Swing the lugnut. Rotate the broomstick slowly and notice that the lugnut’s swinging trajectory isn’t affected or is affected barely. So you can conclude that the pendulum’s trajectory does not alter with rotation. It’s exactly the same thing here except the rotation is a lot slower and the pendulum is a lot heavier.
that actually exlains it very well...however, how does it continue to swing back and forth at a fixed diameter, if you don't have to repeatedly push the pendulum to keep it going? also, how long does it stay in motion for without any human interaction with the pendulum?
YA because he knows earth does not rotate on a axis earth is stationary and flat. Do you really think you live on a ball earth of water spinning 1lk miles per around the sun?????
This is so cool. Thank you so much for explaining this. I fell upon some flat earth videos and for a laugh I watched a few of them. They've made some crazy claims and left me with a few questions, but this answered a good portion of them. Shesh, It sure hurts to admit you don't know something, but it's more painful to be ignorant and never learn at all. I think it was John Wayne who said "life is hard, but it's harder if you're stupid" Amen to THAT! Thanks again.
+MrMemyselfandi415 there is no rotation to earth. it is flat and not a ball. the pendulum is simply controlled by magnets. bullshit scientific community perpetuating lies.
Joe Schmol You mean to tell me that even though everything in space will resign itself into the shape of a ball..such as rain in the sky....or water on zero gravity...the moon is round...other planets are round..the sun is rough.....and roundness is the most natural and comfortable shape of anything in space...you still believe the earth is flat? I also suppose you think it sits upon the back of a turtle because nothing could float in space. Seriously..you have to be a troll.
Joe Schmol I could go for some pig shit right now...but only after they've eaten truffles. Thats the only kind I like...the rest of that shit....it's bunk. Take it from an expert.
Hmm, for scientists, nothing short of perfection is sufficient. There is that once-a-day twist factor which would accumulate over time altering the course of the swing. Silly scientists. Of course a pinned pivot would be more than adequate for any short term home brew experiment. It's likely that Foucault's first iteration of the experiment was clamped like yours.
I'm just flattering the idea of the flat earth theory but what i'm wondering is if planes aren't affected when traveling by the rotation of the earth because the plane is within the atmosphere and is moving with the earth, thus the earth is not moving underneath the plane, then why would the earth be moving underneath this pendulum?
+Hillary Zinks Over long distances flight paths of planes are affected by the Earth's rotation (Coriolis effect). www.classzone.com/books/earth_science/terc/content/visualizations/es1904/es1904page01.cfm?chapter_no=visualization Which is also why hurricanes rotate in different directions in the North and South hemispheres.
Hillary the two things can't really be compared. The pendulum is hanging from a frame that is fixed to the ground and has nothing to do with movement of the atmosphere as it is moving through space with the earth. The only thing it has freedom of is rotation. Because of its free pivot point the pendulum can maintain its plane of motion whilst the hanging frame, the room and the earth rotate. This is not the same as an aeroplane/atmosphere thing. An aeroplane sitting on the ground is travelling over 1000mph along with the earth's surface and the atmosphere above it, as it takes off the aeroplane conserves that 1000+mph momentum in an atmosphere that is also travelling with the earth and has to use thrust to speed up to gain ground over the surface of the earth. We can't actually see the movement of the earth and atmosphere so it appears that the only thing moving is the aeroplane.
@@JenMarco The Coriolis effect has absolutely not been debunked. It's a key component of artillery calculations. It's a known effect. Please substantiate your extraordinary claim.
They had one of those at the Oregon Museum of Science and Industry ( OMSI ) In Portland Oregon in the 60s-70s. Visiting there we kids would watch it swing and try to understand it. Since then they moved OMSI to a new location near the Willamette river. I do not know if they reinstalled the pendulum.
+eman Maybe if you had a helicopter hovering right at the North or South pole for 24 hours, the Earth would rotate under it. But with an airplane it moves with the atmosphere and is constantly adjusting it's direction. The Coriolis effect is taken into account on long flights. www.classzone.com/books/earth_science/terc/content/visualizations/es1904/es1904page01.cfm?chapter_no=visualization
+AbuserTube Cool link thanks, but one other question. The graphic showed a plane leaving Alaska to Florida how would the plane catch up to Florida if the earth below it is moving much faster than the plane flies?
eman Since the atmosphere is moving with the Earth's rotation and the plane has the momentum of the Earth's rotation from where it leaves, the only thing that changes is the difference in rotational speed between Alaska and Florida, which causes it to have to change it's flight plan slightly. As it flies south the atmosphere is moving faster along with the Earth, so will increase the planes speed as well. Remember when a plane is flying, it is air speed that matters not ground speed.
+AbuserTube OKay i follow you, but another question comes up, how about a plane leaving from Florida to Alaska and another from florida to alaska arriving within minutes or an hours of each other? If a plane leaves FL to AK and another from Ak to FL how come they reach their destination within minutes?
Lamborghini Live Not sure why you think it spins too fast? The rate at which the pendulum swings back and forth is determined by the length. The plane that the pendulum is swinging in will gradually change throughout the day. Depending on the latitude that the pendulum is at will determine how long it take for the plane of swing to rotate a complete 360 degrees. At the poles it will take exactly one sidereal day (23 hours 56 minutes and about 4 seconds) to make one rotation. As you get further from the poles it takes longer to make one rotation, until you get to the equator, where it does not rotate at all, but will continue to swing in the same plane.
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion. If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
Sorry but this is BS science. Listen to what they say. That the earth is moving below the pendulum. If this pendulum works how they say it works. You should be able to get in a helicopter in Charlotte NC. Lift off the ground for 3 hrs and land in California.
that's not how it works, the atmosphere also rotates, just like Earth does. Things suspended in the atmosphere also go at the same speed as earth's rotation. If your helicopter went up beyond the atmosphere (if helicopters worked in space), then your logic would work. With a pendulum, it isn't suspended in the atmosphere the way a helicopter would. It rotates because the plane it goes back and forth on stays the same in an absolute kind of sense, regardless of how the earth spins.
Matt Listen to what you are saying. You are saying the earth can be seen to rotate underneath something that is hanging from a fixed position on the earth. The earth either rotates underneath things that are elevated or they don't. You can't have it both ways. If you are saying that it only works inside I know you are crazy.
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion. If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.//
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion. If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth. Ur dumb and the people that liked ur comment we gods creature why do u hate god@@SahilShaikh-ex2rx
@@Woody991 Yet every US citizen is forced through taxpayers dollars to spend money on na$a and all we get is fake photos of earth and everything else in the sky.
from 0:38 to 2:09 I counted 10 swings. So that is 91 secs for ten swings. So guess 9.1 seconds per cycle. If the length of the pendulum is based on T = ( 2 * pi ) * sqrt( L/g ) with g at 9.81 m/s^2 then my guess is the pendulum is about 20.6 meters long.
You learn something new every day and there are millions of wise, intelligent people who know more about things than you do. That's the takeaway for me!
@joelchummel part 3- it's rate of rotation is the same but the outer circle is going faster for it to keep up. So what happens to the outer circle if the center circle goes the speed of light? Why is rotation different than distance if the universe curves? Doesn't that mean everything moves in circle and a straight line is only a fraction of a circle?
If you push something suspended straight it will go straight . If you push it 99.99999 % straight , it will go off at a slight angle. The end. Do they have classes on determining bullshit when you hear It? Alot of ppl need those!
@@iamlegion5826 - except the rate at which the pendulum rotates is predictable based on latitude. If it were due to error, the results would be random. Also, if the pendulum is released at an angle, its swing will be elliptical and not linear.
@@iamlegion5826 - My point is a pendulum released at a non-zero angle would follow a much different path than what we see in a Foucault's pendulum. We can predict and model both. A Foucault's pendulum rotates as describes based on altitude. In the southern hemisphere it rotates counterclockwise. If it were released with any additional lateral momentum (at an angle), you could measure how much was added based on the path.
This simple explanation really helped me understand this business of the Foucault pendulum , even better than some of the ones I've seen using the impressive graphics . And a most fascinating extension of the concept of the Foucault pendulum to the cosmos is something that I have never considered before , although perhaps I should have , being familiar with Newton's so called ' bucket ' experiment , and the concept of absolute space . But your explanation of how the Foucault pendulum is connected to the pivot , and the difference between how such a pendulum should oscillate and a pendulum in a grandfather's clock greatly helped me understand this . Of course , one must think abstractly , as although the material might be simple in terms of only needing a special pendulum , conceptually it is not simple ... i.e . one must put the thinking cap on ! I like it .
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion. If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion. If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
@@trinity6009modern aircraft measure earth rotation as part of the pre flight test. We have been measuring earth rotation using fiber-optic gyroscopes for over 30 years now.
This is bogus because there is a mechanism that keeps it swinging. & how come airplanes don’t adjust their trajectory (for earth moving) during flights?
There is no mechanism. Eventually it'll stop, but using a long cable and a heavy object makes it swing for hours. Also you need to use a charron ring for mounting to correct the cable in order not create eclipse shape swings. You can do this at home
They used to use specialises motor systems, but these days they use strong electromagnets that get pulsed as the pendulum goes past them, giving it a measured kick to keep the energy in the pendulum up
Originally it was just a really heavy ball with a long string. It'll keep going for a good long while, and eventually stop. It's long enough to do the experiment. Simple inertia.
Is not the pendulum hung from a support structure that is attached to the ground so everything is moving together? Is there some kind of frictionless swivel used to suspend the pendulum that allows the pendulum to precess?
gee a quick google and the Dartmouth College lists him as a faculty member.. Oh thats right FE's can make up any BS and lies and make other disprove them..
It's hanging from a point that allows it to swing in all directions. It's true the legs or whatever the design is holding it up from the ground, however the concept is, Once the plane of the swinging is set, it does not change. The rotational movement of the earth does not affect the plane of the swinging. The principle that will describe it best will be the rule of the conservation of angular momentum.
Yeah there isn't a stationary completely FREELY SWINGING pendulum in the world. Also, get out of your basement and look at a sunset it destroys your pizza land.
i still don't understand how they keep it swinging without giving it a shove every couple of minutes, and how do they know that the shove is not changing its orientation.
The pendulum isn't real. It's on a motor designed to look as if it were a working pendulum. No one has been able to repeat Foucault's experiment. Including Faucault.
If it's heavy enough it can work for a long time before stopping. Often there is a magnet that is used to slightly push it up at the right moment, since it only does it "up" it doesn't change results.
Several questions. If the pendulum's movement is caused by a rotating earth, then can it start from a stationary position on its own? Seems like it should after a matter of time. Also, what does earth's rotation have to do with the way it swings? Maybe it's just going around on its own path from the certain way the swing started? Another thought, why doesn't it work at the equator since the earth's supposedly spins 1,000 mph there and that's definitely a movement that would affect a swinging pendulum?
The Pendulums movement is not caused by the movement pf the Earth. Also the plane the Pendulum moves in is fixed, the earth rotates under the Pendulum.
Yes, the Foucault pendulum "proves" that the earth rotates, but that doesn't mean that it's necessarily True that the earth rotates. We have to be honest and not refuse to admit that there are other feasible explanations and that our selection of the rotating/moving earth model is based on certain untestable philosophical assumptions. For example, an alternate explanation is that the earth could be fixed and the entire combined mass of the universe (planets, stars, galaxies, etc) could rotate around the fixed earth approximately every 24 hours. The Foucault pendulum also "proves" this explanation. The only reason to "prefer" the rotating earth is because of philosophical principle of Ockham's razor - which is not without criticism itself. However, I think that what is the "simpler explanation" of Ockham's razor has a lot to do with the opinion of the person evaluating the simplicity. And just because it's a simpler explanation doesn't mean it is necessarily a True explanation.
Why would you propose a different explanation for earths rotation than for billions of other planets? Ockham's razor is just a nice way to say that someone is retarded.
Peder Thil Occum's razor is a foundational scientific criterion for the preferability of one explanation over another (and the principle you just used to defend the rotating earth paradigm. Which position do you want to revise - that the earth rotates or that Occum's razor shouldn't be a deciding factor?
Why is the Foucault's pendulum experiment a fake?. This is the reason. If the earth was spinning (in reality it's not), then this Faoucault's pendulum experiment would make sense. But let's continue now with our learned knowledge, Airplanes fly from continent to continent, why does it take more or less the same amount of time to fly from Sydney to South Africa as it takes from South Africa to Sydney. The earth rotates at 1600 km/h at the equator, flying from Sydney to South Africa is with the spin and should takes significantly faster than back, which is against the spin. In fact it would be faster to fly with the spin across the glode the other way round than to fly straight to Sydney. According to the math it should take 4 times faster. Why is this not happening? Because the earth is not moving/spinning. You would say, but the planes is moving with the earth and it's relative position with respect the the earth doesn't change. And I would say, but how can only Foucault's pendulum experience the rotation of the earth and planes which is also suspended in the air not. The supposed experiment and practice doesn't match up.
This has to do with relative velocities. You, the air, your airplane (on the ground) are all rotating at the same rate at the Earth, so, relative to the earth, you are not moving. When your airplane takes off, it moves ~800 km/h relative to the Earth. So you're actually moving, say, 1800 km/h, the 1000 km/h of the Earth's speed + the 800 km/h relative to the Earth.
@Anon Ymous So this foolishness proves the earth is spinning at 1040mph. No wonder the guy who offered $15'000 to anyone who could prove the earth was moving and was taken to court won his case.
@@centurionguards3819what was that case? Thanks This also seems to have zero drag or loss of momentum, ok, fine, but they start this off WITH momentum, right? So this is just moving from that initial energy.
@@speaklifegardenhomesteadpe8783 "what was that case?" Thompson vs Garcia. The court ruled that the plaintiff had not satisfied the technical conditions of the $5000 (not $15 000) contest. Unlike flat-Earthers’ claim, the court neither “debunked the globe” nor ruled “Earth is flat.” The court did not rule on the scientific merits of the evidence of either side.
Is it possible that the movement of the pendulum produces a static electric charge that attracts or repels the "ball" in a certain direction? Also, is it possible that the metal object compelled to move along a river of electrons produced by the Sun? The Steel Cable and the Brass end piece connection provide a platform for Electrolysis, perhaps the device is influenced by electromagnetic flow? Also I think that the Pendulum pivot point would have to me Frictionless in order to not effect the initial direction of swing.
@@entangledmindcells9359 The initial impulse give far outweighs any supposed rotation of a globe earth, which has been shown over and over. Foucault is a masonic deceiver: earth is level and stationary, both have been proved _experimentally_ time and time again. People should try to snap out of their delusion.
@@duncanvantongeren4646 No the earth has NEVER been proven stationary.. and FYI.. LEVEL.. Look up "Level Surface" as it relates to surveying.. as for your "the initial impulse give far outweighs any supposed rotation" .. That is why they use a flame to burn the string holding the weight to start it off. TO REMOVE ANY INITIAL impulse.. sounds like you have been listening to a bunch of lying deceivers for your facts.
@@entangledmindcells9359 Yes, you did all your life: it is called brainwashing - the Royal Art... Earth is stationary. Experimentally proven by Michelson & Morley, Sagnac, and others. Airy's failure. RLG vs mechanical gyroscope. Etc. etc. Earth is level. Experimentally proven by the non-existence of physical horizons: we see too far. Known surface of earth is 80% water and water is always level. Any and all photos of a curved earth can easily be proved to be deceptions. Etc. etc. As for Master of the Second Veil Foucault, his deception is not taken serious by any real physicist or mathematician, but you are too lazy to do a simple Google search. At least for now, you can still find the papers... That you suggest that burning string gives an impulseless start of the pendulum shows that almost everyone nowadays lives in Disney lala land...
@@entangledmindcells9359 The abject arrogance of many people nowadays is truly stunning. The flattery used as tool for mind rape, works all too well: idiots nowadays think they know it all and have no feeling of who they are talking to in the slightest... "Men are born ignorant, not stupid. They are made stupid by education." -- Bertrand Russell
@joelchummel Ok. Question: both circles made their revolution at the same speed at the exact sametime-how? The two circles have a very different distance in their revolution if layed out in a straight line but yet the above observation still stands.
The “Coriolis Effect” is often said to cause sinks and toilet bowls in the Northern Hemisphere to drain spinning in one direction while in the Southern Hemisphere causing them to spin the opposite way, thus providing proof of the spinning ball-Earth. Once again, however, just like Foucault’s Pendulums spinning either which way, sinks and toilets in the Northern and Southern Hemispheres do not consistently spin in any one direction! Sinks and toilets in the very same household are often found to spin opposite directions, depending entirely upon the shape of the basin and the angle of the water’s entry, not the supposed rotation of the Earth. The Coriolis Effect is also said to affect bullet trajectories and weather patterns as well, supposedly causing most storms in the Northern Hemisphere to rotate counter-clockwise, and most storms in the Southern Hemisphere to rotate clockwise, to cause bullets from long range guns to tend towards the right of the target in the Northern Hemisphere and to the left in the Southern Hemisphere. Again, however, the same problems remain. Not every bullet and not every storm consistently displays the behavior and therefore cannot reasonably be used as proof of anything. What about the precision of the sight aperture, human error, and wind? What about Michelson-Morley-Gale’s proven motion of the aether’s potential effect? Why does the Coriolis Effect affect most storms but not all? If some storms rotate clockwise in the North and counter-clockwise in the South, how do those storms escape the Coriolis force? And if the entire Earth’s spin is uniform, why should the two hemispheres be affected any differently? Coriolis’s Effect and Foucault’s Pendulum are both said to prove the Earth moves beneath our feet, but in reality only prove how easy it can be for wolves in sheep’s clothing to pull the wool over our eyes....dont be fooled folks...its all BS
Edward WISDOM KEEPER/SEEKER OF TRUTH The thing about sinks is comeplete nonsense and has nothing to do with coriolis effect, it's misinformation. The foucault pendulum experiment however, if done crrectly, works every time and gives always the expected results. Show me where it doesn't. "Not every bullet and not every storm consistently displays the behavior and therefore cannot reasonably be used as proof of anything." Yes they do. Show me a cyclone that rotates in the other direction than the one it's supposed to. Please.
What would happen if the pivot point of the pendulum were attached to an overhead track that was parallel to the equator, and the pendulum were swung perpendicular to the equator? It should move along the track and stay parallel to it initial angle, unless the earth gives it a nudge. In the beginning the pendulum mass is moving with the earth, but the the two masses try to move independant of each other. A point/force in space is determined by its mass and velocity. That mass will try tomaintain
Boodysaspie I’m not going to challenge anything you said, it just seems like... Well if I toss a ball straight out of a moving car window, it will travel in a diagonal trajectory relative to the plane the car and the ball are traveling on. Ignoring wind resistance etc. If I tie that ball to a string and hang it at some point, it’s no different. To the observers in the car, the ball will appear to go perpendicular from the car, when really it has some momentum from the moving object from which it was thrown. but I guess what you’re saying is that it does not end up mattering. Gyroscopes I understand, pendulums I do not. I suppose a swinging pendulum is supposed to behave like a partial gyroscope.
Very interesting: Could one of these pendulums (not conveniently, at all, of course) be used as a GPS of sorts? Since it will behave differently depending, globally upon where it is positioned? Although, now that I think about it, it would only be able to give you the latitude, so I guess it wouldn't be useful in that pursuit.
1 want to make small foucault pendulum that works on my office table, if a take spherical metal ball and hang it by metal wire in small room of size 10'x10'x10', will this experiment work?
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion. If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth..
Please look up axial precession. The pole star changes on a cycle of about 26,000 years. 14,000 years ago the pole star was near Vega back then. Also, strictly speaking, if you take a time lapse photo of the pole star today you will see it trace a small circle, very small. You need a telescope for this. Polaris is a trinary star system as there are three stars there, close to 0 RA and 0 Dec. Close .. very close. Please search for Polaris as seen by the Hubble Space Telescope.
Of course, this is assuming that your Foucault Pendulum is in perfect running order, to eliminate any defects of friction or wind resistance that would affect the pendulum's path. In saying the possible influences, I should have said "partial relative motions" of the earth about its axis, the earth about the sun, the sun about the milky way. In theory each of these relative motions could be calculated and summed together to predict the hypothetical path of the pendulum bob.
Life is2 inertia, if you want to calculate lifespan, you should find where/ how/ what/ which is the source ( the energy) , or force which caused the inertia
You can start it in any direction, as long as you're not on the equator, it will appear to rotate due to it's plane of inertia being fixed, but the Earth rotating under it. It works best at the north or south poles, doesn't work on the equator. You can measure your latitude on the planet by how quickly it appears to rotate. (The pendulum itself doesn't rotate at all, it just appears to. The Earth moves. That's what the Foucault pendulum proved.)
It doesn't! Air resistance (and even the very small resistance in bending the cable where it swings) will slow it down, mostly in the beginning where it moves most. But because it is so heavy compared to the air resistance, it can swing for a looong time, days, for sure.
I understand how a foucault pendulum appears to rotate its plane of swing at the poles but I get lost thinking about why it does so away from the poles.
some people just want to watch the world turn
Nice.
@@acbulgin2 Def pays more to lie
Too bad, the world is motionless.
That's you I know
Flat earthers: this should work on a disc.
Me and every other intellectual: ok do the math and explain how it works on a disc.
One of my earliest memories in science was of the Foucault's pendulum in the London Science Museum, it was suspended down the stairwell in the entrance. Sadly no longer there. Many years later after taking a physics class on a visit, and finding it was gone, we set one up in a stair well in the science block.
Thats crazy you say that, I got here by thinking of my earliest memory, I was in a science center fo some sort and seeing one of these. I lived outside of Modesto California, wonder if there is a museum there. Interesting the things that stick in your head as a child.
Funny, this is also my earliest childhood memory of the Museum of Science, Boston, Massachusetts, well over 50 years ago. That and the Neanderthal cave mock up!
Did it work and also what happens if it is physicaly stopped by hand to a ded stop standstill position then gently let go without moving it? Will it start moving again by itself?
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion.
If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
@@trinity6009 "alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion."
And there it is folks, dumber than an empty breadbasket.
Thanks for the lolz.
explains this better in 3 mins than my professor does in a class period 👏
Somehow I doubt it's your professor's fault. Maybe you need a screen to turn your brain on. 🤪😜👹👍
@@iggykarpov some profs really beat around the bush, they lack conciseness
@@iggykarpov Maybe you can't prove a point without emojis
@@leifnelson-melby1512 what do i need to prove to you? An opinion requires proof? Ok, I can prove that you are out of your depth in a discussion requiring logic.
U mean uses alot of mumbi jumbo to talk around somtehing so illogical to make it seem plausible 🤔 yeah. . sure . . whatever u say 👍😒
Thank you, Dr. Gregory House. Lovely explanation
I bet the rotation was caused by Lupus
@@PatrickTimmins It's never lupus.
To the doubters:
Step 1: sit in office chair
Step 2: make pendulum using a string and weight (or just headphones).
Step 3: sitting still, hold the string end up and drop the weight so it swings freely (it goes back and forth in a plane)
Step 4: repeat step 3 but this time spin yourself in the chair first. When u drop the weight this time, the plane of the pendulum's motion will now rotate (at least it will appear to in the "chair" frame of reference) and the pendulum motion will appear erratic.
This is analogous to the earth-pendulum subject.
Note: if the pendulum motion in Step 4 results the weight hitting u in the face, just know that's physics hitting u in the face.
carnafillian113 and no one has tried to reply to ya yet? Hmm ponder ponder ponder
Gibran Kassaz lol I think I cracked it, as long as the way I explained it makes sense
It's you, not u.
Thanks for the suggestion. That's a nice experiment that everyone can try. Certainly the basic mechanism of pendulums are beyond doubt, but some may try to argue that something other than Earth's rotation is being measured. I have to agree with Tsa though - it's "you" not "u".
Ooh, I like this idea for a demo. Great idea! " just know that's physics hitting u in the face." haha XD
It will stop eventually, its just very heavy and the air doesn't slow it down fast enough to notice. I imagine there will also be some friction at the top of the cable where it is hanging from.
Now, if you could encase this inside a vacuum chamber, reducing air friction, it will swing much much longer.
The scientist explaining the pendulum: ^
The pendulum: “i came in like a WREEECKING BAAAAAAALLL!”
2:18 he says it can be used to detect "the rotation -- the revolution of the earth around the sun" or even the solar system around the galaxy. But what is he talking about?
The orbit around the sun or around the galaxy is not a "rotation", it's freefall - it shouldn't be possible to detect in any local way without an external reference (like the stars, galaxies or CMB)
The best explanation possible! No one talks about how the pendulum is mounted which is the most important detail.
Well, not the most important....
Exactly.
What I want to know is what keeps it moving for 24 hours after it is set in motion.
@@BoogWar01 There are a few ways to do this, most common is a magnet under the floor to give the weight a gentle push to keep it going. Many deniers like to claim "Oh, see, there's a magnet! It's fake!" But the magnet is not causing the precession. A heavy weight on a long rope will swing all on its own long enough to witness the phenomenon, no magnets necessary. It'll eventually stop swinging but not before it's definitively proven the earth is rotating.
@@jasonmack760 what troubled me is the lack of decay of the oscillation. That too would be noticeable over the time the oscillation takes place. Video showed NO DECAY (as so much as is visible to my eye) but no explanation was given. That’s all I am saying.
Thank you so much for the video. Really liked the way of talking and teaching. Expect more videos about various physics topics
Short answer: it's powered.
Longer answer, from Dartmouth's website:
The pendulum uses an electronic mechanism to keep it going; otherwise it would lose its energy due to friction and stop after a few hours.
@@TedJerome how is the pendulum dropped?
It is a question of integrals, in effect. Which level are you looking at determines what factors you measure. The rotation of the Earth on its access? The wobble of the Earth as it orbits the sun? The orbit of the Earth around the sun? The influence of the other bodies within our solar system? The rotation of the solar system around the galactic center? The rotation (presumably) of the galaxy around a universal center, whatever that may be? Seems like each of these could be measured independently as long as you know what motion of pertubation to evaluate.
thank you for the upload, that last excerpt "like blew my mind man"
One of the best explanations of this experiment I've ever heard. Thanks and aloha!
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion.
If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
One question on the North Pole situation. Since the pendulum is hung from a structure connected to earth and initially the structure and pendulum are all rotating with earth, shouldn't the plane of oscillation also rotate and for an observer on earth, it should appear as if the plane of oscillation appear to be static?
I would like to say a few words about the pendulum and explain in detail why the pendulum is complete nonsense and obviously cannot work.
First.-When a pendulum, constructed according to the plan of M. Foucault, is allowed to vibrate, its plane of vibration is often variable-not always. The variation when it does occur is not uniform-is not always the same in the same place; nor always the same either in its rate or velocity, or in its direction. It cannot therefore be taken as evidence; for that which is inconstant cannot be used in favor of or against any given proposition. It therefore is not evidence and proves nothing!
Secondly.-If the plane of vibration is observed to change, where is the connection between such change and the supposed motion of the Earth? What principle of reasoning guides the experimenter to the conclusion that it is the Earth which moves underneath the pendulum, and not the pendulum which moves over the Earth? What logical right or necessity forces one conclusion in preference to the other?
Thirdly.-Why was not the peculiar arrangement of the point of suspension of the pendulum specially considered, in regard to its possible influence upon the plane of oscillation? Was it not known, or was it overlooked, or was it, in the climax of theoretical revelry, ignored that a “ball-and-socket” joint is one which facilitates circular motion more readily than any other? and that a pendulum so suspended (as was M. Foucault's), could not, after passing over one arc of vibration, return through the same arc without there being many chances to one that its globular point of suspension would slightly turn or twist in its bed, and therefore give to the return or backward oscillation a slight change of direction? Let the immediate cause of the pendulum's liability to change its plane of vibration be traced; and it will be found not to have the slightest connection with the motion or non-motion of the surface over which it vibrates. I tested it and I would like to invite anyone who is interested to do so. If the earth's rotation were real, the pendulum would swing by itself and would not need a suspension point. In addition, the rotation of the earth in orbit and the speed at which it should fly through nothing are not taken into account either.
Now a few words about the pendulums that are currently in museums all over the world. These have completely different properties because they run with a prepared electronic mechanism. The size and weight of the ball also has an influence. Anyone who is interested should like to look at such a pendulum and read the warning sign in front of it and realize that I am telling the truth. The pendulum proves nothing because it's a sleight of hand!
Finally I would like to add a quote from 1861 from the notes of Prof. Dr. Samuel Birley Rowbotham to show that Leon Foucault was not only a liar but also a thief: "At a recent meeting of the French Academy of sciences, “M. Dehaut sent in a note, stating that M. Foucault ( whose experiments on the pendulum effected a few years ago at the Pantheon, are of European notoriety) is not the first discoverer of the fact that the plane of oscillation of the free pendulum is invariable; but that the honor of the discovery is due to Poinsinet de Sivry, who, in 1782, stated, in a note to his translation of 'Pliny,' that a mariner's compass might be constructed without a magnet, by making a pendulum and setting it in motion in a given direction; because, provided the motion were continually kept up, the pendulum would continue to oscillate in the same direction, no matter by how many points, or how often the ship might happen to change her course.” The cited work dates from 1861 and is called "Zetetic astronomy, Earth not a globe! An experimental inquiry into the true figure of the Earth."
The tricky part is that the plane of vibration has nothing whatever to do with the meridian longitude nor with the Earth’s motion, but followed the plane of the magnetic meridian. That's why you can use it to determine latitudes. But it would be like hanging a compass on a thread and then saying that the earth rotates. Furthermore, the pendulum swings infinitely long thanks to a prepared mechanism. This is a kind of magnet in the ball, which gives the apparatus a push for more momentum every now and then, and a so-called Charron ring, which simply eliminates the variances of the vibration level. You have to imagine this. It's pure scam!
@@johnpurefeeling6258 "I would like to say a few words about the pendulum and explain in detail why the pendulum is complete nonsense "
So you can't explain that precession occurs as a function of latitude all over the globe as observed for over a century.
Nice word salad, but weak sauce.
(And plagiarizing some other idiot).
@@sissyfus6181 Another Bot!
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion.
If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
The pendulum measures rotation relative to a frame that is not rotating. This may sound circular, but there is actually a fundamental difference between a rotating and a non-rotating frame. In a rotating frame, for example, you can feel the effects of a centrifugal force, which is absent in a non-rotating frame.
true thats why we are fixed.... believe in your own sense
@@jiriangills5867 Except that the Earth is measurably not "fixed".
It's fixed. Deal with it. @@primonomeultimonome
I just read The Accidental Universe by Alan Lightman and he briefly mentioned this experiment in the last chapter of his book. He was talking about all the great revolutions of science and how we came to our current understanding of the universe as a whole. Brilliant book. It's a riveting and engaging read. You'll enjoy it.
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion.
If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
@@trinity6009 Stop spamming your ignorance.
Makes you look bad.
The pendulum doesn't know squat, it's plane of motion is independent; I would surmise that the friction at the pivot is far too great to even "react" to our solar system's rotation in the Milky Way, let alone the universe. There's an exponential difference between 1-rotation/24hrs and 1-rotation/240,000yrs.
shutup. it at least shows were on some kinda spherical object and not flat
@@sarategiun2026.....I figured out we live on a large spheroid of some sort before I saw my first globe. I also know we're orbiting our Sun since I can observe the stars rotate 361° from night to night (90° every quarter) The fact that our Sun's N-S-N movement stops for days at the Solstices and moves the most at the Equinoxes works out with our 23° tilt of you can conceptualize the geometry. I've watched the pendulum at Griffith Park many times and it rotates noticeably slower than the one I saw in Paris twice, but that still doesn't mean they "know" anything, as Mr LaBelle here clearly states. And don't forget, the Equinox is coming up shortly, when everybody across the globe observes the Sun rise at 90°, and set at 270°!
@@bhaggen i'm not sure why you just wrote all that. i wasn't disagreeing with you...you just said "the pendulum doesn't know squat" .. and i disagree because this experiment is the one thing i can use in a debate with a flat earther and they can't debunk it or back it up using their model. so i appreciate this experiment, that's all.
@@sarategiun2026.....I may "know" how the pendulum works, but the pendulum doesn't "know" squat any more than Earth "knows" its role in the solar system. "Know" refers to knowledge which requires an active intelligence. Know this! The flat-earth is rooted in a belief system that's based on a gross misinterpretation of scripture; they're afraid that if Earth is merely a ball orbiting one of billions of stars in an endless universe, then Man would be unimportant to God, so don't waste your time. The pendulum is an exhibit, NOT an experiment and is a weak argument for the globe since it must be kept in motion electronically and its plane of motion can be changed at will. I gave you 3 indisputable facts for the spheroid which can be observed by anyone, anywhere, anytime. I guarantee that in 3 days, you too will observe our Sun rise 90° East and set 270° West, which can only occur on a globe...Just observe
Exactly what kind of hanger is used for the cable.
I believe the Foucault pendulum is simply measuring and revealing external rotation relative to the initial swing plane of the pendulum.
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion.
If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
@@trinity6009 That makes no sense, as the momentum of the pendulum's oscillation has nothing to do with the rotation of the pendulum's surroundings. They are two different forces on the same object. The only way a pendulum would continue is if all external resistance were removed.
Made sense to me. No need to manually start it. @@Cotronixco
Wish they would show the other end of that cable.
It’s so simple and so undeniable. Flat earthers foiled again by a ball on a string. 😂
You realize pendulums act differently during an eclipse right? Look up allais effect sometime.
@MilitantPacifist allias tested and repeated his experiment getting the same results in both 1954 and 1959 and published his findings from two different eclipses. Now I'm not saying it's a forgone conclusion, however of the times it has been tested it has shown allias effect more than it hasn't meaning there is at least something to it. Even if it effected 2 out of 6 times (which the numbers are actually closer to the opposite) it means the earth's movement is not the cause of the pendulums movement. A simple loss of momentum and wind resistance will make the pendulum slowly lose its path. If you let the thing keep going eventually it stops, it's not like it's got infinite energy moving in the exact same direction. If you were to swing a pendulum the exact same speed 20 times and didnt record the exact same movement as the earth's movement is constant then it's not being caused by the earth's movement.
This has listed at the bottom times this was repeated, it was observed on numerous occasions, not observed only two times and one put maybe as results.
science.nasa.gov/science-news/science-at-nasa/1999/ast06aug99_1
@MilitantPacifist as I pointed out the results were posted. I'm not going on the article I'm going on the results. You claimed it hadn't been repeated you were wrong. It's been repeated on more attempts and observed on more attempts than it was failed to be observed. Once again if it effected it even once its proof that the earth's movement is not measured by a pendulum. This is a sad proof of anything and people need to admit it, it proves absolutely nothing about the earth.
Its hilarious to think real "scientists" cant see the major flaws in this kids experiment. Many explanations can be made for the movement of a pendulum, sticking with the 1st one because it supports your theory isnt science it's called bias.
lol I used a sight youd have to accept as accurate or look like you dont trust your science authority.
@MilitantPacifist lol oh expiremental error creeps in? But this this PROOF the earth moves, I thought not being able to repeat it everytime was what you said was the problem with allias effect? You do see the double standard you've walked into right? Surely you see the hypocrisy? You destroyed your own argument with your own argument.
@MilitantPacifist exactly only an ignorant hypocrite can't see when they are being a hypocrite. You were proven wrong about the allias effect being repeated by a flat earther. Your cognitive dissonance is strong. You can see clearly that someone has found a major flaw in this whole pendulum argument and you refuse to accept its unbiased results which were observed and repeated using the scientific method. Pseudoscience refuses results which don't agree with their theories and use excuses to explain them away.
Lol, I love this looks flat comment. Please show one example of empirical evidence that the earth curves. You kinda need to have that to claim the globe is scientific. Empirical evidence meaning anyone can test it through observation or experience. Show me one please.
You jumping straight to insults also a tactic of pseudoscience. Acting like I'm dumb for not believing what you were told to believe isnt an argument. Nothing you know about the globe was learned it was all told to you in a classroom, thate not learning that's indoctrination. If they wanted to teach you about reality they would have done it outside as science is the study of the natural world.
2:41 Foucault Pendulum is sensitive about rotation but rotation about what?
I don't understand why is this question such a speculation. Isn't motion of the pendulum as a result of a pseudo force in an accelerated frame of reference while the earth is rotating, revolving and precessing around it's axis. So shouldn't it be rotation about its own axis..
That philosophical question vs physics at the end is fascinating!
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion.
If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
@@trinity6009 You have made the same inane comment three times.
There is nothing right or logical in your post
LMAO what's wrong why did you not point it out?@@Neilhuny
Cults are notorious for saying "you're wrong" without backing up their claim.@@trinity6009
Doesn't it stand to reason that there is an "absolute" in angular velocity? There is no absolute linear motion, but this pendulum kinda shows that there is an "absolute" value to be derived for angular velocity. Analogous to "the universe as a whole" is just the zero reference of rotation.
Am I missing something?
I took the liberty of paraphrasing the Professor's question, a bit:
"How does this pendulum, here, on our little spinning planet, going around its sun, going around the Milky Way, etc, know something about the wider universe?"
It doesn't. Like the ratio of pi (or any other constant you care for), it only illustrates the nature of the universe itself. By building the pendulum, we just gave ourselves a tool to see what the universe is doing; what is otherwise too small an effect for us to perceive in our daily lives, but, nonetheless, has been there all along because it's just the way the universe works. Foucault gave us a brilliant way to illustrate the action of the universe.
Maybe that's why these Foucault Pendulum exhibits commands such attention? Because at some instinctive level we know we are seeing something amazing, even if we can't explain why. Watching a ball swing back and forth? Not most people's first idea for something interesting to do. But set one up and watch: most people will stop and observe, at least for a few minutes. Or in my case, hours.
I was wondering what effects an earthquake would have on this pendulum?
2:30 - Suitably placed Foucault's Pendulum is sensitive to rotation of any gravitational force capable of influencing it. Indeed, the Foucault's Pendulum in this video is responding to the gravitational influence from the Milky Way's center, however since the rotation is over hundreds of millions of earth years, it's seems non-existent, but in reality the pendulum is changing direction on a extremely minutiae level, the length of change is approximated to many fractions of a sub-atomic particle. Or in other words we must remember, BARY-CENTER, is always at play, even at the grandest of scales like galaxies and superclusters!
It's not responding to gravity, is it? Rather, the Pendulum remains fixed in its plane of inertia. That merely allows us to measure other motions relative to an inertial reference frame.
Does the mechanism that swings the pendulum have any effect on the outcome? How do you determine at what speed does the pendulum swings? How do you determine at what height the pendulum is hung?
I would like to see movement of a pendulum that has not been manually started!
Same here lol... like this doesn't prove much of anything to me. It's all dependent on which direction you start it in. And it probably has none to do with air pressure than anything else
It sounds like you're demonstrating a misunderstanding of what the experiment shows.
Firstly, about setting the pendulum swinging. The experiment isn't somehow adding energy to the pendulum; it's about showing the consequences of the energy it already has. At its most active points, the poles, the pendulum would never start on its own, and even where it could, it would simply take too long and be a ridiculously subtle motion. So we do actively add energy by raising the pendulum; for precision we drop it as predictably straight as possible, originally by burning a string that was pulling the pendulum aside. The key is that the swing starts back and forth, straight through the center below the attachment point, not around in an oval.
About air pressure. Yes, the pendulum is affected by air; specifically, air resistance slows its motion. Usually a very heavy and long (thus slow) pendulum is moved to reduce this effect, but it's still enough to stop it in a matter of hours. Air currents would also disturb the experiment, but as it's swinging back and forth, a consistent stream would not change the result. Originally, this was simply a factor unreasonable to eliminate, but today we have a few options.
We could run the pendulum in a low pressure chamber, like the ZARM drop tower. Or we could device a means to add more energy without redirecting the pendulum. The latter is what museum demonstrations will tend to do, so the pendulum is both accessible and visibly operating for each visitor. It's a tricky subject in itself to make the motor not affect the pendulum's direction.
Now, all that said, this is an experiment easy to replicate. You need string, a bob, a tall place (e.g. a spiral staircase with some space in the middle), and a lot of patience. It has been done many times, but doing it yourself is a great way to verify. You might learn something, if only that it's challenging to eliminate variables.
@@0LoneTech
It sounds like you're trying to convince me I am a monkey living on a wet spinning testicle and that will never happen
@@theseattlegreen1871 So you elected to demonstrate that you're not just a toxic reality denier, but uncouth as well. Who are you trying to impress with that?
@@0LoneTech
I am whatever you say I am
This is why I serch inforation in English being my first language spanish. You can find people like him that explains very well
Ide really like to spend 24hours at the 24 hour one sitting in the same spot and literally watch as I travel around the universe!
You’d have to go to the North or South Pole then 🥶
Coriolis is not the cause of drift. Here are the three main points:
1) heaver ball equals faster drift, but this should not be the case if Coriolis is the explanation.
2) starting the swing parallel to the spin, does not prevent drift, there should be no drift if Coriolis is the cause of drift
3) similar to point 2, any swing not parallel to the spin, does not stop drifting once it lines up with spin, it should stop if Coriolis was the cause of drift
How does the pendulum not turn with the Earth? It’s still attached to the roof which moves with the Earth so shouldn’t it just follow the same rotation pattern as the Earth?
The Earth is fixed, this is just a convenient phenomenon that they use to try and explain the ridiculous notion that the Earth is moving and spinning faster than a bullet.
@@llvn11 gross, a flat earther
@@llvn11 gross, a flat earther
@@llvn11 : Says the flatter that can’t man up his own large pendulum and show it not processing.
But why does the pendulum change because it is hanging on something that is also rotating with it
Thank you for the fantastic explanation!
🦋🌈✨👣
There's no question about the rotation's relativity. The pendulum forms a partial gyroscope. It will detect rotation out of axis, but is not sensitive to rotation in its own axis.
I hope someone will answer to this question: if the pendulum is attached to a building, and therfore rotating along with the earth, shouldn't the pendulum rotate too and draw the same straight line at any time?
cicciobau That's what i was thinking.
cicciobau I think a good way to understand it is to think about a glass of water. If you rotate the glass, the water will rotate too, but at a different speed and a time delay. So if you put such a pendulum in a house on the north pole, then the earth rotates the house and what you observe is the pendulum swinging in the same position, and everything around it is spinning (just like water in a glass after you spin the glass). The more you move towards the equator, the less the house will rotate around its axis
+cicciobau No, because the pendulum is free to swing in any direction because of the way it is mounted. If you rotated the building the pendulum would not rotate with it, but would swing in the same plane.
Like it was doing?
Kimlin Awwsome so the pendulum is moving with earth but at a slower rate than us... and thats why its path changes? Im kind of a dumbass so i cant understabd what you said very well
There used to be one in London's Science Museum.
That's why I never walk near construction sites after hours where wrecking balls are. I don't want to get hit in the head by one because of the earth spinning. *note sarcasm
Ikr this is not even a proof of anything lol
what keeps it moving, is there a push like in a clock movement? It would have to eventually stop.
Exactly. In museums they use electro magnets to keep it going.
Also if you look up the way it rotates in the North and south Pole it's the opposite to storms. And yet both are meant to prove earths rotation yet spin in different directions in the same poles 🤔 somethings a miss here.
@ZDProletariat hmm I'm not sure about that, maybe.
However if the earth rotates underneath the pendulum, then why doesn't it rotate under a hovering helicopter? 🤔
Inertia keeps it moving. The thing must weigh thousands of pounds.
@@Rachie-nj3oi Maybe, because the helicopter runs out of gas?
@@Rachie-nj3oi The Pendulum moves with the Earth, quite obviously, it stays where you put it as the Earth moves. The plane of inertia doesn't move. Put the helicopter on a string and swing it for a day, it'll do the same thing the Foucault Pendulum does.
For those that don’t understand this:
Tie a fishing line through a lug nut.
Tie the other end to a broomstick.
Swing the lugnut.
Rotate the broomstick slowly and notice that the lugnut’s swinging trajectory isn’t affected or is affected barely.
So you can conclude that the pendulum’s trajectory does not alter with rotation.
It’s exactly the same thing here except the rotation is a lot slower and the pendulum is a lot heavier.
I’m 14 not a teacher so forgive me of my teaching method is wrong.
@@blakecarterpiano Nah, it's a very good point! You understand how pendulums work. It's pretty important to understanding how this experiment works.
that actually exlains it very well...however, how does it continue to swing back and forth at a fixed diameter, if you don't have to repeatedly push the pendulum to keep it going? also, how long does it stay in motion for without any human interaction with the pendulum?
Why does the earths rotation effect this pendulum but not effect planes that fly west to east or east to west?
this is gooooood question
It does affect them actually, what makes you think that it doesn't?
It does and pilots to have to adjust this when flying
@Joshua
May be there is some contraption that makes it possible to steer a plane?
At least he was honest at the end. May we all have peace at heart.
YA because he knows earth does not rotate on a axis earth is stationary and flat. Do you really think you live on a ball earth of water spinning 1lk miles per around the sun?????
Joe Blow 😂🤣
I’m not sure you guys understand. The conjecture was in whether the pendulum could measure rotation with respect to the universe as a whole.
@Noah comedy gold
This is so cool. Thank you so much for explaining this. I fell upon some flat earth videos and for a laugh I watched a few of them. They've made some crazy claims and left me with a few questions, but this answered a good portion of them. Shesh, It sure hurts to admit you don't know something, but it's more painful to be ignorant and never learn at all. I think it was John Wayne who said "life is hard, but it's harder if you're stupid" Amen to THAT! Thanks again.
+MrMemyselfandi415 there is no rotation to earth. it is flat and not a ball. the pendulum
is simply controlled by magnets. bullshit scientific community
perpetuating lies.
Joe Schmol You mean to tell me that even though everything in space will resign itself into the shape of a ball..such as rain in the sky....or water on zero gravity...the moon is round...other planets are round..the sun is rough.....and roundness is the most natural and comfortable shape of anything in space...you still believe the earth is flat? I also suppose you think it sits upon the back of a turtle because nothing could float in space. Seriously..you have to be a troll.
MrMemyselfandi415
i'm only a troll if you eat pigshit. get a fork and dig in.
+MrMemyselfandi415 the truth is you are desprete for confirmation that the earth is round. you don twanna be crazy right?
Joe Schmol I could go for some pig shit right now...but only after they've eaten truffles. Thats the only kind I like...the rest of that shit....it's bunk. Take it from an expert.
LaBelle says the FP needs a "specially designed pivot" but many kinds of pivots will function. I once used a three-jaw dill chuck. It worked well.
Hmm, for scientists, nothing short of perfection is sufficient. There is that once-a-day twist factor which would accumulate over time altering the course of the swing. Silly scientists. Of course a pinned pivot would be more than adequate for any short term home brew experiment. It's likely that Foucault's first iteration of the experiment was clamped like yours.
In 12 years there has been not a single flerf able to explain why the plane shifts.
Not one.
It's only attached at one point, so it is free to swing in any plane along that single vertical line.
I'm just flattering the idea of the flat earth theory but what i'm wondering is if planes aren't affected when traveling by the rotation of the earth because the plane is within the atmosphere and is moving with the earth, thus the earth is not moving underneath the plane, then why would the earth be moving underneath this pendulum?
+Hillary Zinks Over long distances flight paths of planes are affected by the Earth's rotation (Coriolis effect). www.classzone.com/books/earth_science/terc/content/visualizations/es1904/es1904page01.cfm?chapter_no=visualization Which is also why hurricanes rotate in different directions in the North and South hemispheres.
Planes are affected by the jetstream. Coriolis effect has been debunked. If you are in the atmosphere you are not affected by the spin of the globe.
Hillary the two things can't really be compared. The pendulum is hanging from a frame that is fixed to the ground and has nothing to do with movement of the atmosphere as it is moving through space with the earth. The only thing it has freedom of is rotation. Because of its free pivot point the pendulum can maintain its plane of motion whilst the hanging frame, the room and the earth rotate. This is not the same as an aeroplane/atmosphere thing. An aeroplane sitting on the ground is travelling over 1000mph along with the earth's surface and the atmosphere above it, as it takes off the aeroplane conserves that 1000+mph momentum in an atmosphere that is also travelling with the earth and has to use thrust to speed up to gain ground over the surface of the earth. We can't actually see the movement of the earth and atmosphere so it appears that the only thing moving is the aeroplane.
@@JenMarco The Coriolis effect has absolutely not been debunked. It's a key component of artillery calculations. It's a known effect. Please substantiate your extraordinary claim.
They had one of those at the Oregon Museum of Science and Industry ( OMSI ) In Portland Oregon in the 60s-70s. Visiting there we kids would watch it swing and try to understand it. Since then they moved OMSI to a new location near the Willamette river. I do not know if they reinstalled the pendulum.
Multiple flat earthers in the comments think he's saying the earth's spin makes the pendulum swing. This may help explain why they are flat earthers.
Yep.
Not the brightest.
the connection to the structure is a well lubricated swivel
Why does the earth not spin under a plane but does under this foucault pendulum?
+eman Maybe if you had a helicopter hovering right at the North or South pole for 24 hours, the Earth would rotate under it. But with an airplane it moves with the atmosphere and is constantly adjusting it's direction. The Coriolis effect is taken into account on long flights. www.classzone.com/books/earth_science/terc/content/visualizations/es1904/es1904page01.cfm?chapter_no=visualization
+AbuserTube Cool link thanks, but one other question. The graphic showed a plane leaving Alaska to Florida how would the plane catch up to Florida if the earth below it is moving much faster than the plane flies?
eman Since the atmosphere is moving with the Earth's rotation and the plane has the momentum of the Earth's rotation from where it leaves, the only thing that changes is the difference in rotational speed between Alaska and Florida, which causes it to have to change it's flight plan slightly. As it flies south the atmosphere is moving faster along with the Earth, so will increase the planes speed as well. Remember when a plane is flying, it is air speed that matters not ground speed.
+AbuserTube OKay i follow you, but another question comes up, how about a plane leaving from Florida to Alaska and another from florida to alaska arriving within minutes or an hours of each other? If a plane leaves FL to AK and another from Ak to FL how come they reach their destination within minutes?
Lamborghini Live Not sure why you think it spins too fast? The rate at which the pendulum swings back and forth is determined by the length. The plane that the pendulum is swinging in will gradually change throughout the day. Depending on the latitude that the pendulum is at will determine how long it take for the plane of swing to rotate a complete 360 degrees. At the poles it will take exactly one sidereal day (23 hours 56 minutes and about 4 seconds) to make one rotation. As you get further from the poles it takes longer to make one rotation, until you get to the equator, where it does not rotate at all, but will continue to swing in the same plane.
Still slightly over my head, but still clear enough to get the general point across to me. Thanks! This is super interesting!
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion.
If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
So this debunks the flat earth theory.
Sorry but this is BS science. Listen to what they say. That the earth is moving below the pendulum. If this pendulum works how they say it works. You should be able to get in a helicopter in Charlotte NC. Lift off the ground for 3 hrs and land in California.
that's not how it works, the atmosphere also rotates, just like Earth does. Things suspended in the atmosphere also go at the same speed as earth's rotation. If your helicopter went up beyond the atmosphere (if helicopters worked in space), then your logic would work. With a pendulum, it isn't suspended in the atmosphere the way a helicopter would. It rotates because the plane it goes back and forth on stays the same in an absolute kind of sense, regardless of how the earth spins.
Matt Listen to what you are saying. You are saying the earth can be seen to rotate underneath something that is hanging from a fixed position on the earth. The earth either rotates underneath things that are elevated or they don't. You can't have it both ways. If you are saying that it only works inside I know you are crazy.
TR1PpyNick So the only thing that doesn't move with the atmosphere is a pendulum that hangs from a special fulcrum? LOL
how do you not understand this? you've never played with a gyroscope? same concept.
What about if you travel against the rotation? Why does it not take longer to go against the rotation and travel the same distance over land?
To sum the video up: The Foucault pendulum remains an unproven conjecture more in the realm of philosophy than in physics at this point.
To sum your comment up: You don't understand basic physics and you are completely clueless about everything said in the last minute of the video.
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion.
If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.//
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion.
If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
Ur dumb and the people that liked ur comment we gods creature why do u hate god@@SahilShaikh-ex2rx
Do why my plum rite calms eventually then? Does that mean that the Earth stands still so I can determine the plum of whatever I am building?
better go back to using a water level. lol
Earth is flat.
@@Noah55555 Thank you.
Foucault's pendulum: making flat earthers cry since 1851.
Now we know why there's so much water on earth: It's the tears of the flat earthers who hate being disproven every single time.
Oh and I guess you can say that considering the composition of the sea, they get pretty SALTY.
"Ball lickers" refuse to see the truth. Keep taking those blue pills and stay asleep in this fake matrix.
@@maxisoulcaliber8941
Tiresome, gullible bores. Keep sending money to the flat earth society.
@@Woody991 Yet every US citizen is forced through taxpayers dollars to spend money on na$a and all we get is fake photos of earth and everything else in the sky.
from 0:38 to 2:09 I counted 10 swings. So that is 91 secs for ten swings. So guess 9.1 seconds per cycle. If the length of the pendulum is based on T = ( 2 * pi ) * sqrt( L/g ) with g at 9.81 m/s^2 then my guess is the pendulum is about 20.6 meters long.
You learn something new every day and there are millions of wise, intelligent people who know more about things than you do. That's the takeaway for me!
@joelchummel part 3- it's rate of rotation is the same but the outer circle is going faster for it to keep up. So what happens to the outer circle if the center circle goes the speed of light? Why is rotation different than distance if the universe curves? Doesn't that mean everything moves in circle and a straight line is only a fraction of a circle?
In this comment section: People who need to take basic physics classes. lol
If you push something suspended straight it will go straight . If you push it 99.99999 % straight , it will go off at a slight angle. The end.
Do they have classes on determining bullshit when you hear It? Alot of ppl need those!
@@iamlegion5826 - except the rate at which the pendulum rotates is predictable based on latitude. If it were due to error, the results would be random. Also, if the pendulum is released at an angle, its swing will be elliptical and not linear.
@@c433z linear is straight. If it moves sideways at all , it is not linear.
@@iamlegion5826 - My point is a pendulum released at a non-zero angle would follow a much different path than what we see in a Foucault's pendulum. We can predict and model both. A Foucault's pendulum rotates as describes based on altitude. In the southern hemisphere it rotates counterclockwise. If it were released with any additional lateral momentum (at an angle), you could measure how much was added based on the path.
@@c433z my point is ... unless the pendulum is powered it will stop. If it is powered , it proves nothing.
This simple explanation really helped me understand this business of the Foucault pendulum , even better than some of the ones I've seen using the impressive graphics . And a most fascinating extension of the concept of the Foucault pendulum to the cosmos is something that I have never considered before , although perhaps I should have , being familiar with Newton's so called ' bucket ' experiment , and the concept of absolute space . But your explanation of how the Foucault pendulum is connected to the pivot , and the difference between how such a pendulum should oscillate and a pendulum in a grandfather's clock greatly helped me understand this . Of course , one must think abstractly , as although the material might be simple in terms of only needing a special pendulum , conceptually it is not simple ... i.e . one must put the thinking cap on ! I like it .
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion.
If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion.
If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth.
@@trinity6009modern aircraft measure earth rotation as part of the pre flight test.
We have been measuring earth rotation using fiber-optic gyroscopes for over 30 years now.
This is bogus because there is a mechanism that keeps it swinging. & how come airplanes don’t adjust their trajectory (for earth moving) during flights?
what? they are constantly adjusting. Thats what the autopilot does.
There is no mechanism. Eventually it'll stop, but using a long cable and a heavy object makes it swing for hours.
Also you need to use a charron ring for mounting to correct the cable in order not create eclipse shape swings.
You can do this at home
How do you compensate for the lack of perpetual motion without disturbing the trajectory of the pendulum?
They used to use specialises motor systems, but these days they use strong electromagnets that get pulsed as the pendulum goes past them, giving it a measured kick to keep the energy in the pendulum up
Originally it was just a really heavy ball with a long string. It'll keep going for a good long while, and eventually stop.
It's long enough to do the experiment. Simple inertia.
It doesn't have an independent frame of reference. And don't you have to start it? How does this prove earths rotation? This is nonsense
Is not the pendulum hung from a support structure that is attached to the ground so everything is moving together? Is there some kind of frictionless swivel used to suspend the pendulum that allows the pendulum to precess?
WIthout proof or sufficient evidence. But he's a Professor, so we believe he's right!.
gee a quick google and the Dartmouth College lists him as a faculty member..
Oh thats right FE's can make up any BS and lies and make other disprove them..
It's hanging from a point that allows it to swing in all directions. It's true the legs or whatever the design is holding it up from the ground, however the concept is, Once the plane of the swinging is set, it does not change. The rotational movement of the earth does not affect the plane of the swinging.
The principle that will describe it best will be the rule of the conservation of angular momentum.
If this is true there would never be a stationary pendulum anywhere If earth actually was spinning
Yeah there isn't a stationary completely FREELY SWINGING pendulum in the world.
Also, get out of your basement and look at a sunset it destroys your pizza land.
@@SahilShaikh-ex2rx At least put some effort into your lies, cause its embarassing to read it.
Please explain to me how a sunset works on a flat earth then
i still don't understand how they keep it swinging without giving it a shove every couple of minutes, and how do they know that the shove is not changing its orientation.
The pendulum isn't real. It's on a motor designed to look as if it were a working pendulum. No one has been able to repeat Foucault's experiment. Including Faucault.
If it's heavy enough it can work for a long time before stopping.
Often there is a magnet that is used to slightly push it up at the right moment, since it only does it "up" it doesn't change results.
A belief in something does not make it true!
some self projecting there?
Like flat earth
Several questions. If the pendulum's movement is caused by a rotating earth, then can it start from a stationary position on its own? Seems like it should after a matter of time.
Also, what does earth's rotation have to do with the way it swings? Maybe it's just going around on its own path from the certain way the swing started?
Another thought, why doesn't it work at the equator since the earth's supposedly spins 1,000 mph there and that's definitely a movement that would affect a swinging pendulum?
The Pendulums movement is not caused by the movement pf the Earth. Also the plane the Pendulum moves in is fixed, the earth rotates under the Pendulum.
Yes, the Foucault pendulum "proves" that the earth rotates, but that doesn't mean that it's necessarily True that the earth rotates. We have to be honest and not refuse to admit that there are other feasible explanations and that our selection of the rotating/moving earth model is based on certain untestable philosophical assumptions. For example, an alternate explanation is that the earth could be fixed and the entire combined mass of the universe (planets, stars, galaxies, etc) could rotate around the fixed earth approximately every 24 hours. The Foucault pendulum also "proves" this explanation. The only reason to "prefer" the rotating earth is because of philosophical principle of Ockham's razor - which is not without criticism itself. However, I think that what is the "simpler explanation" of Ockham's razor has a lot to do with the opinion of the person evaluating the simplicity. And just because it's a simpler explanation doesn't mean it is necessarily a True explanation.
Why would you propose a different explanation for earths rotation than for billions of other planets?
Ockham's razor is just a nice way to say that someone is retarded.
I'm pretty sure you're joking. At least I hope so. Putting a capital T on true makes you seem very unscientific...magical.
Peder Thil Occum's razor is a foundational scientific criterion for the preferability of one explanation over another (and the principle you just used to defend the rotating earth paradigm. Which position do you want to revise - that the earth rotates or that Occum's razor shouldn't be a deciding factor?
phileaufellow I don't understand why you are asking me that.
Why is the Foucault's pendulum experiment a fake?. This is the reason. If the earth was spinning (in reality it's not), then this Faoucault's pendulum experiment would make sense. But let's continue now with our learned knowledge, Airplanes fly from continent to continent, why does it take more or less the same amount of time to fly from Sydney to South Africa as it takes from South Africa to Sydney. The earth rotates at 1600 km/h at the equator, flying from Sydney to South Africa is with the spin and should takes significantly faster than back, which is against the spin. In fact it would be faster to fly with the spin across the glode the other way round than to fly straight to Sydney.
According to the math it should take 4 times faster.
Why is this not happening? Because the earth is not moving/spinning.
You would say, but the planes is moving with the earth and it's relative position with respect the the earth doesn't change.
And I would say, but how can only Foucault's pendulum experience the rotation of the earth and planes which is also suspended in the air not.
The supposed experiment and practice doesn't match up.
Thank you for the upload
Earth don 't move!
You're literally looking at experimental proof the Earth moves.
This has to do with relative velocities. You, the air, your airplane (on the ground) are all rotating at the same rate at the Earth, so, relative to the earth, you are not moving. When your airplane takes off, it moves ~800 km/h relative to the Earth. So you're actually moving, say, 1800 km/h, the 1000 km/h of the Earth's speed + the 800 km/h relative to the Earth.
This ia smoke and mirrors to "prove" the earth is moving. Wafflers.
@Anon Ymous So this foolishness proves the earth is spinning at 1040mph. No wonder the guy who offered $15'000 to anyone who could prove the earth was moving and was taken to court won his case.
@@centurionguards3819what was that case? Thanks
This also seems to have zero drag or loss of momentum, ok, fine, but they start this off WITH momentum, right? So this is just moving from that initial energy.
@@speaklifegardenhomesteadpe8783 "what was that case?"
Thompson vs Garcia.
The court ruled that the plaintiff had not satisfied the technical conditions of the $5000 (not $15 000) contest.
Unlike flat-Earthers’ claim, the court neither “debunked the globe” nor ruled “Earth is flat.”
The court did not rule on the scientific merits of the evidence of either side.
@@centurionguards3819 : And you ran away? Why? Something to hide?
@@kitcanyon658 How gullible are you people?
Of say 10 consecutive but random trials, what is the tested tolerance resultant accuracy of all 10 considered? (Or anticipated if not done).
Earth is flat and stationary, that pendulum dont change orientation.
Exactly. And yet it does.
@@Woody991 Proving the Earth moves.
@@BenGrem917
Correct.
The Earth is neither flat not stationary, and this video is irrefutable evidence of that.
Is it possible that the movement of the pendulum produces a static electric charge that attracts or repels the "ball" in a certain direction? Also, is it possible that the metal object compelled to move along a river of electrons produced by the Sun? The Steel Cable and the Brass end piece connection provide a platform for Electrolysis, perhaps the device is influenced by electromagnetic flow? Also I think that the Pendulum pivot point would have to me Frictionless in order to not effect the initial direction of swing.
The angular movement is directly connected to the longitude. What a coincidence.
L-I-A-R
so you have done the experiment and have proven it yourself..
doubt it since I have and have observed exactly what this video shows.
@@entangledmindcells9359 The initial impulse give far outweighs any supposed rotation of a globe earth, which has been shown over and over.
Foucault is a masonic deceiver: earth is level and stationary, both have been proved _experimentally_ time and time again.
People should try to snap out of their delusion.
@@duncanvantongeren4646
No the earth has NEVER been proven stationary.. and FYI.. LEVEL..
Look up "Level Surface" as it relates to surveying..
as for your "the initial impulse give far outweighs any supposed rotation" .. That is why they use a flame to burn the string holding the weight to start it off. TO REMOVE ANY INITIAL impulse.. sounds like you have been listening to a bunch of lying deceivers for your facts.
@@entangledmindcells9359 Yes, you did all your life: it is called brainwashing - the Royal Art...
Earth is stationary. Experimentally proven by Michelson & Morley, Sagnac, and others. Airy's failure. RLG vs mechanical gyroscope. Etc. etc.
Earth is level. Experimentally proven by the non-existence of physical horizons: we see too far. Known surface of earth is 80% water and water is always level. Any and all photos of a curved earth can easily be proved to be deceptions. Etc. etc.
As for Master of the Second Veil Foucault, his deception is not taken serious by any real physicist or mathematician, but you are too lazy to do a simple Google search. At least for now, you can still find the papers...
That you suggest that burning string gives an impulseless start of the pendulum shows that almost everyone nowadays lives in Disney lala land...
@@entangledmindcells9359 The abject arrogance of many people nowadays is truly stunning. The flattery used as tool for mind rape, works all too well: idiots nowadays think they know it all and have no feeling of who they are talking to in the slightest...
"Men are born ignorant, not stupid. They are made stupid by education."
-- Bertrand Russell
@joelchummel Ok. Question: both circles made their revolution at the same speed at the exact sametime-how? The two circles have a very different distance in their revolution if layed out in a straight line but yet the above observation still stands.
People blindly believe this stuff.
People blindly believe the Earth is flat.
***** that too
How is this blind belief? this is just basic mechanics of motion that anyone can test for themselves-
The “Coriolis Effect” is often said to cause sinks and toilet bowls in the Northern Hemisphere to drain spinning in one direction while in the Southern Hemisphere causing them to spin the opposite way, thus providing proof of the spinning ball-Earth. Once again, however, just like Foucault’s Pendulums spinning either which way, sinks and toilets in the Northern and Southern Hemispheres do not consistently spin in any one direction! Sinks and toilets in the very same household are often found to spin opposite directions, depending entirely upon the shape of the basin and the angle of the water’s entry, not the supposed rotation of the Earth.
The Coriolis Effect is also said to affect bullet trajectories and weather patterns as well, supposedly causing most storms in the Northern Hemisphere to rotate counter-clockwise, and most storms in the Southern Hemisphere to rotate clockwise, to cause bullets from long range guns to tend towards the right of the target in the Northern Hemisphere and to the left in the Southern Hemisphere. Again, however, the same problems remain. Not every bullet and not every storm consistently displays the behavior and therefore cannot reasonably be used as proof of anything. What about the precision of the sight aperture, human error, and wind? What about Michelson-Morley-Gale’s proven motion of the aether’s potential effect? Why does the Coriolis Effect affect most storms but not all? If some storms rotate clockwise in the North and counter-clockwise in the South, how do those storms escape the Coriolis force? And if the entire Earth’s spin is uniform, why should the two hemispheres be affected any differently? Coriolis’s Effect and Foucault’s Pendulum are both said to prove the Earth moves beneath our feet, but in reality only prove how easy it can be for wolves in sheep’s clothing to pull the wool over our eyes....dont be fooled folks...its all BS
Edward WISDOM KEEPER/SEEKER OF TRUTH
The thing about sinks is comeplete nonsense and has nothing to do with coriolis effect, it's misinformation.
The foucault pendulum experiment however, if done crrectly, works every time and gives always the expected results. Show me where it doesn't.
"Not every bullet and not every storm consistently displays the behavior and therefore cannot reasonably be used as proof of anything."
Yes they do. Show me a cyclone that rotates in the other direction than the one it's supposed to. Please.
What would happen if the pivot point of the pendulum were attached to an overhead track that was parallel to the equator, and the pendulum were swung perpendicular to the equator? It should move along the track and stay parallel to it initial angle, unless the earth gives it a nudge. In the beginning the pendulum mass is moving with the earth, but the the two masses try to move independant of each other. A point/force in space is determined by its mass and velocity. That mass will try tomaintain
So what keeps the small initial momentum from when it was released from affecting it's trajectory in the long term?
How much should it affect it and for how long? Would not such small "sideways" forces ebb to zero in very short order?
ExtantFrodo2 I dunno, you tell me.
yes, they would. it's called entropy.
Boodysaspie I’m not going to challenge anything you said, it just seems like... Well if I toss a ball straight out of a moving car window, it will travel in a diagonal trajectory relative to the plane the car and the ball are traveling on. Ignoring wind resistance etc. If I tie that ball to a string and hang it at some point, it’s no different. To the observers in the car, the ball will appear to go perpendicular from the car, when really it has some momentum from the moving object from which it was thrown. but I guess what you’re saying is that it does not end up mattering. Gyroscopes I understand, pendulums I do not. I suppose a swinging pendulum is supposed to behave like a partial gyroscope.
ExtantFrodo2 Order degrades into chaos.
Very interesting: Could one of these pendulums (not conveniently, at all, of course) be used as a GPS of sorts? Since it will behave differently depending, globally upon where it is positioned? Although, now that I think about it, it would only be able to give you the latitude, so I guess it wouldn't be useful in that pursuit.
Dowsing does not count as an accurate way to measure direction.
@@syrop26 It's not dowsing. The Foucault's Pendulum can reliable measure latitude. Not longitude, though.
this experiment keeps blowing my mind
1 want to make small foucault pendulum that works on my office table, if a take spherical metal ball and hang it by metal wire in small room of size 10'x10'x10', will this experiment work?
If the alleged constant rotation of the earth affected pendulums in any way then there should be no need to manually start pendulums in motion.
If Earth diurnal rotation caused the 360 degree uniformed diurnal rotation of pendulums, then there should not exist a stationary pendulum anywhere on earth..
Please look up axial precession. The pole star changes on a cycle of about 26,000 years. 14,000 years ago the pole star was near Vega back then. Also, strictly speaking, if you take a time lapse photo of the pole star today you will see it trace a small circle, very small. You need a telescope for this. Polaris is a trinary star system as there are three stars there, close to 0 RA and 0 Dec. Close .. very close. Please search for Polaris as seen by the Hubble Space Telescope.
Of course, this is assuming that your Foucault Pendulum is in perfect running order, to eliminate any defects of friction or wind resistance that would affect the pendulum's path.
In saying the possible influences, I should have said "partial relative motions" of the earth about its axis, the earth about the sun, the sun about the milky way. In theory each of these relative motions could be calculated and summed together to predict the hypothetical path of the pendulum bob.
Amazing. The universe is so full of Pleasantries!
Life is2 inertia, if you want to calculate lifespan, you should find where/ how/ what/ which is the source ( the energy) , or force which caused the inertia
To detect rotation, do you start the pendulum perpendicular to the rotation?
You can start it in any direction, as long as you're not on the equator, it will appear to rotate due to it's plane of inertia being fixed, but the Earth rotating under it. It works best at the north or south poles, doesn't work on the equator. You can measure your latitude on the planet by how quickly it appears to rotate. (The pendulum itself doesn't rotate at all, it just appears to. The Earth moves. That's what the Foucault pendulum proved.)
It's interesting that it is connecting to many objects at the same time.
It doesn't! Air resistance (and even the very small resistance in bending the cable where it swings) will slow it down, mostly in the beginning where it moves most. But because it is so heavy compared to the air resistance, it can swing for a looong time, days, for sure.
I understand how a foucault pendulum appears to rotate its plane of swing at the poles but I get lost thinking about why it does so away from the poles.
It's not the pendulum relative to everything else, it is everything else relative to the pendulum that is shifting.