In 10 minutes I understood more about Coriolis force than in a semester of physics! It's amazing what good visual animations can do! How much easier will learning be in a few years from now... Please never stop making these videos! You're saving countless human life hours!
@@rexsovelllejes9383 I guess what @Rainer Wahnsinn means is that some of us , in order to understand we need to first be able to visualize in examples like this before reaching the calculations, or at least in my case will be very hard to assimilate the numbers without understanding the other first. Some other people just needs the numbers and done, and that's ok too.
False! Coriolis might be a thing if spin was the only motion. You must do a vector analysis of all motions, to get the resultant vector of the combined effect of all motions. We can debunk the globe by doing this for just 2 motions: spin + orbit + 21 mm/s/s alternating accel/decel every 12 hours or half revolution, experienced by everything on earth's surface, where is it? Nowhere! A rock balancing statue proves motionless earth. Rigid body rotation with translation is the physics ua-cam.com/video/AfEbsnOXrX0/v-deo.html Note the word "rigid" because only solid bodies can spin like a top see flat.wtf [ flatearthclassroom.blogspot.com/2020/11/centrifugal-force-based-on-rotation-axis-of-body.html ] And that's the end of the glob!
For years now I've never really understood the Coriolis force, and just learnt the rules and it's effects to pass tests. This is the first time I've seen it explained in such a clear way, that doesn't dumb it down too much either. Much appreciated.
I like the editing. When the intro is going the music is chill and relaxing but when the Real deal kicks in, the music becomes mysterious, heavy, Eerie.
@@aghosh5447 kind of my job. I'm an animator, game developer, artist, coder, 3D artist, and recently started learning music. So observation is becoming a habit.
Why is it UA-cam videos do SO MUCH BETTER explaining things we learned in school than the teachers that taught us? And much faster! I can take a test right after this video and probably get an 85 maybe and be able to retract it to a friend if need be. Next topic! But when taught in school, this one topic could take a few days or a week. I feel as if I’m not understanding it all still and probably get a C+ if lucky taking a test. Retained nothing and not able to explain it back to anyone to save my life! UA-cam and channels like this were game changers for learning especially if you’re mainly a visual learner.
This always reminds me of me and my friends throwing ball to each other on a spinning roundabout :D The curved trajectories of ball felt almost like sorcery at the time.
Only someone who truly understands a subject could create motion graphics that so plainly demonstrate fundamental physics. Although this is a science channel, this is a masterclass in visualization. So much to learn from this channel despite using a “simple” style… bravo!
@@ScienceClicEN Could you please make a video about 1.James Maxwell equation 2. Entropy ( when a ball fall down where can we see disorder?) 3. Quantum physics basic
@@ScienceClicEN Can you show the mathematics? Its nice to see the math from different frames of reference and how they are equivalent and derived from different starting conditions.
I've seen some old illustrations about how a water fountain shooting water straight up into the air would create strange looking arcs instead of the water coming straight back down. And if you have enough pressure to reach sufficient height, and tilt the direction of the water jet slightly to the side, the water can do a figure eight path before falling back into the pool. The very first episode of The Expanse shows something like that with water coming out of a bottle, though the effect might be shown exaggerated based on the size of the station they are in.
This is by far the best explanation of the Coriolis effect. Visual effects and audio comments make this really clear. A great contribution to increasing our understanding of this beautiful planet.
What we feel as the force of gravity is a something of a Coriolis effect. It derives from the conservation of all objects' constant velocity thru spacetime, and the way mass slows time with increased proximity to the center of mass. The upper part of an object, farther from a nearby mass than the lower part, and so moving thru time faster than the lower, is "pushed" toward the lower part, causing what seems to be motion toward the center of the nearby mass, in much the same way that a projectile aimed toward the pole of a planet seems to trace a curved path.
@@alepunto7404 i know that the shape of an object can effect it's center of mass and hiw gravity seems to act on it, but i think it'd probably be something more like a 4d shape made of spacetime? Idk don't quote me on that
@@orbismworldbuilding8428 Yes, you are right, it´s better to think in 4D. I guessed that shape could affect gravity because a stick perpendicular to earth would have greater time dilation differential between both ends of the stick than a stick parallel to earth, hence the perpendicular stick should feel more gravity. But I was thinking in 3D. I guess that taking in consideration time as another dimension of the object, the bottom of the object with slower "time speed" its going to slow down the upper part of the object with higher "time speed". And decreasing the "time speed" of the whole object, increases the "space speed", causing the object to start moving towards the earth.
I was just today thinking about the nature of inertial forces, and wanted someone to explain them to me in a way that didn't seem like cheating, just to restore the invariance of the laws of physics and here this man is!
The Corillis force would be a good way to simply prove that the Earth is a sphere (not quite perfect, but very close to a sphere) and not a disc. You would have to do the experiment with the Folcault pendulum at 3 different locations that are not on a line. In the spherical model, you could use this pendulum to determine the latitude you are standing on. A rigid disc cannot rotate in such a way that the same values as with the sphere would come out.
Unfortunately, just like with every other method to prove the earth is round, the people you would aim to show this to (that don’t already agree with it) will find ways to dismiss it. Very cool comment to bring it up though. Thanks for sharing
You are correct, however flat earthers don't care about stuff like this. They always find some bullshit response. You could fly a flat earther into space for him to see the Earth is spherical and he would say that the windows on the ship were actually tv screens. And that's really sad.
Exactly what I was thinking as well. But to comprehend even simple physics we need brain slightly larger than a pea which is not the case for the group you are talking about!
This youtube channel should be mandataroy to watch and to make it a subject for any one on earth. I swear the intelligence levels would rise significantly world wide.
i've watched a bunch of science youtube videos, this channel is imho the most underrated one. the way topics are explained and illustrated is genius. thanks a lot for those videos!
That may be the most mind-expanding, eye-opening 10 minutes of video I have ever watched. You literally rocked my whole world and my perceptions of it, in a well thought out and efficient delivery. This is why the internet was invented. Thank you very much.
This is a very good video. You get a great A+ for saying "øtvøsh" effect. This was a very correct pronunciation of the name of the Hungarian physicist Baron Loránd Eötvös.
Thank you very much. I had a hard time study coiolis force when I was studying classical mechanics. The animations help me understand the concept much better.
I remember being introduced to the dynamics of angular momentum in my high school physics class in 1952. The force you describe is a primary force in motorcycle "steering", helicopter flight control, and numerous other applications and dynamic scenarios we encounter in the physical world. You will deal with such forces if you study engineering and take courses like differential equations.
Good visual explanation! However, the fact that the astronaut's feet move faster than his head does not make him feel the Coriolis effect and consequently feel the spin, as the Coriolis force only comes into play when something is moving relative to the rotating reference frame, and the astronaut in the example is still stationary in the rotating reference frame. On the other hand, he would feel the spin if he was moving around inside of the rotating system, but then he would feel it regardless of how much faster his feet were spinning than his head.
What if the circle has small radius? It is understandable that angular speed will be the same anywhere in the circle, but the linear speed will be greater at the feet. Will that difference in speed make astronaut feel the differences in that linear speed? And if astronaut feels the difference in linear speed does it mean he/she feels the force?
@@miladestesnai9650 In order for the astronaut to feel a certain thing, that thing has to be measurable. How do you measure a difference in velocity? I’m not sure how you would do that in the general case. However, if he moves around, which he is likely to do at some point, he will notice that he doesn’t move as he is used to moving when affected by normal gravity on Earth, and measuring this deviation in how he moves (which could be done by some visual tracking system, for example) is a way to measure the Coriolis effect. I’m pretty sure he would feel this deviation unless the rotating wheel was huge or he was moving very, very slowly, even if he wouldn’t be able to put his finger on exactly what was different. Another effect, which would be measurable even if you remained perfectly still relative to the rotating reference frame, is the deviation in acceleration which causes the artificial gravity. Since the acceleration is proportional to the position relative to the center of rotation (if we assume a 2D system), you will feel that your limbs become heavier the closer to the floor you keep them, and on the contrary, if you for example raise up your arm, it becomes lighter. And your arms will not be pulled what you normally think of as straight down by the artificially gravity, but slightly outwards from your body. But these are effects of the centrifugal force and not of the Coriolis force.
I'm literally blown away just by the notion that everything moves in a straight line through the universe. I'm 32 and I haven't thought about it or known about it before now. It's a jaw dropping notion
Cool video. However, I'd have to argue that the depiction of trajectories isn't accurate. From the outside, the ball's trajectory always ought to be a straight line.
like at 3:47 ? i agree, the red line should be straight, I think. also, assuming that the red line is straight and the person follows a curved path (straight path is the shorter and faster path), it makes sense that the ball would have greater displacement (from its starting point from where the ball was thrown) and thus land further than where the person would land, which is what I understand the coriolis force to be. please correct me if I'm wrong
I feel like calling these forces "fictitious" is misleading or at least unnecessarily confusing. As explained in the video, these forces are *observed* due to the frame of reference. Calling them fictitious and invented implies they're not real in any capacity, but their effects are plain to see. I think calling them "observed" or "apparent" forces or some similar term without the dismissive connotation would help a lot. Having finished the video the kinds of terms I described are used after the initial explanation, which I appreciate.
I would be tempted to say that they are fictitious in the sense that they are absolutely undetectable locally (with an accelerometer for example). They are only "detectable" in the sense that they make straight lines look bent in certain coordinate systems. But in the more modern and powerful framework of general relativity these forces don't exist at all. On the other hand I agree with you that the terms "observed" or "apparent" might be better suited. I especially like "apparent" as it really conveys the idea that they are almost an "optical illusion".
The difference is that there is no way to measure "absolute motion", whereas there are ways to measure "absolute forces" (or rather "absolute accelerations")
Calling inertial forces "fictitious" get especially silly once you realize that this includes gravity, which breaks the standard euclidean description of inertial reference frames.
A simpler way of describing this is being in a car moving at a constant speed. If you drop something in the car the item just falls straight down, whereas from an outside perspective it's moving at an angle.
OMFG, why couldn't that doctor show us this AMAZING VIDEO rather than trying to explain it?! I knew Corriolis effect from past, but never quite understood it to it's fullest.... until now... ;) . Thank you for this! 🧡
Absolutely love this video, found it after watching Scott Manley video about artificial gravity but couldn't visualize how this force works. Your animations are exactly what I was looking for :)
Cool stuff! I was writing a story where in one of the scenes, astronauts are travelling in an elevator up the shaft of a massive centrifuge very rapidly. I imagined the Coriolis effect would manifest and ended up making the astronauts feel a push in the opposite direction of the centrifuge's rotation (if the astronauts didn't hold on to anything, they would tilt sideways as the elevator ascended). It's a bit more exaggerated than it would be in real life but I imagined that was what would happen in such a scenario.
8:12 Thats weird. I mean i get it. I just never thought about it. So when you throw up something in such an artificial(?) gravity wheel then it will drop (far) next to you? :D Imagine getting used to this over years. And then on another planet you are totally lost because everything you throw does behave "weird" again :D
The way Octave Masson narrate it is so good to hear that you can understand simply those complex ideas. Plus the animation is very clear and matches the narration which make this video (and all other ScienceClic videos) perfect and unique!
This is actually a myth go watch Veritasium's video on it :) Edit: my bad it's just not noticeable in a sink, you have to set up the experiment! It's the coriolis effect too apparently! Sorry!
A sink is so small that the coriolis effect becomes extremely tiny. Such factors as the shape of the sink or weak currents in the water become much more important and completely overpower the much tinier force of the coriolis effect.
There's no way a single UA-camr owns this channel you must have a whole team or company helping you? Because I could do this with the editing and stuff but would take long
For the translation in English I am helped by Octave, who also does the voice over. Furthermore I am helped with a few people depending on the video, for proofreading. But otherwise for the moment I do everything else on my own (writing, music, images, animations)
Is this not very similar to general / special relativity ?! Looking at the centrifuge and how the ball goes forward when looking from outside but down when the point of reference is holding the ball
It is very similar. The coriolis and centrifugal forces are pseudo forces that arise from viewing inertially moving things from a rotating (that is non-inertial) reference frame. In general relativity, the force that makes things fall is _exactly the same thing_ . Standing on the surface of earth we are non-inertial observers while freely falling objects are the inertial ones. We see a force pulling them down(like the coriolis force pulls things sideways) but it vanishes in free fall.
"The effective acceleration of gravity at the poles is 980.665 cm/sec/sec while at the equator it is 3.39 cm/sec/sec less due to the centrifugal force. If you weighed 100 pounds at the north pole on a spring scale, at the equator you would weigh 99.65 pounds, or 5.5 ounces less." NASA Googled it. Just wanted to share.
I've always thought that a centrifuge isn't the best way to make artificial gravity of this type, since of all the issues with construction combined with the issue of Coriolis effect. Instead, I imagine two spaceships bound by a cable, spinning around the center of the cable, like two people with their arms outstretched. That way, both ships would feel a centrifugal force, and the cable could be made long enough to make the Coriolis effect negligible. Also, this method doesn't require any additional construction on a spaceship, as all it needs is a place to attach the cable, and spacecraft are usually designed to be able to withstand 1g of acceleration.
The problem with your approach is there's going to be much less usable space. Due to nausea, you're always going to have a bit of waste space in the centrifuge, but you get more "real estate" for the same amount of angular speed than you would get in 2 ships tied together. I agree that this idea is much better suited for early space travel, as the initial cost and maintenance are probably lower, but the centrifuge is the best bang for your buck
@@AndiAbrudan I agree that you will have less usable space. However it’s essentially impossible to launch a Centrifuge on its own, meaning you’d probably have to assemble it in space, driving up the cost a lot. For this reason, I believe my method has more bang for your buck. Because in order to have a centrifuge of a large enough size that it’s possible to stand up without severe nausea, you would need several spaceships worth of material. Also, available space isn’t usually a concern for astronauts. Apollo astronauts spent weeks crammed into a space the size of a minivan. But yes, in the far future, large full centrifuges may become the norm. However I also want to mention that both designs are centrifuges. It’s just that my design only uses 1% of the edge of the centrifuge, the rest is just empty space. This means you can have a higher radius to space ratio, helping prevent that sort of force.
Yep. Two Starships dock, tether-up, then use RCS to spin up. Not sure about dynamic stability though, and of course it would only be used in coast phase.
@@ovencake523 I'm sure it could be engineered. You would only need Mars G (0.4 G), and modern aramid fibres are pretty darn strong. You need somewhere between 400 - 800 m of cable, depending on degree of coriolis discomfort. Failure would not be catastrophic, so you could have pretty tight tolerances. Compared to space elevator, it would be easy as. :-)
@@maikv750 Gravity for things on the ground at the equator is still 99% as much as at the poles. That's pretty minor. Much more important for the lift of planes is the speed by which it moves through the air. How the air is moving over the ground below is irrelevant for the plane, which is why speeds for aircrafts are normally in knots. Knots already specifies that the speed is measured compared to the air or the water something travels to instead of compared to the ground. Since the air through which the plane travels already experiences the coriolis effect itself, I think it becomes irrelevant as far as planes are concerned. It does matter for navigation, though. A plane flying straight from north to south has to fly in an arc to actually get where it wants to.
This is a great video, but will unfortunately never get noticed by UA-cam's algorithm due to the title. Try changing it to something along the lines of: "Why Does Traveling East Make You Lighter?". This may seem like clickbait, but as Veritasium has explained just recently, this is both necessary for clickthrough rates, and to encourage viewers who would never care what the the Coriolis force is to actually learn about it.
FINALLY, I understand why things work the way they do in a spinning space wheel a la "2001", etc. It just never made sense to me until you explained the Coriolis effect. My senses just told me everything should just be free floating. I guess that means that if the wheel wasn't spinning around it's axis, there would not be a Coriolis effect and everything would just float freely like it does in the ISS.
3:49 Question: Why does the ball take a curved path? In the moment the ball gets released it has 2 components: x, the direction of movement from the wheel at the moment of releasing and y, the direction of the throw. So it should follow a straight line depending on the x,y components. Does friction play a role here for the curved path?
"it should follow a straight line depending on the x,y components. " ... from the reference point of a motionless outsider. From the perspective of the rotating ball thrower, it the ball take a curved path. Because the observer itself rotate.
This is one of those videos when two-and-a-half minutes into it you go oh I get it now it makes so much perfect sense, thank you so much for this video and by the way you are so awesome thank you for using this music which I love so much!!!
Very simple for people to understand. When they taught us about Coriolis force back in those days, we hardly understood what they were talking about. We had no computers nor internet.
I was really hoping that the Eotvos effect was a setup for showing the ball seamingly floating weightless while circling the spaceship, with the simpler explanation being that it is stationary and the spaceship is spinning around it. Still a good video :)
There's a cool scene in the show Babylon 5, where they have a monorail going straight through the center of the station's cylinder. There's an emergency and a character has to jump out, and because he's almost at the center of the cylinder, he's just hovering near the rail. But since he jumped out, he's slowly drifting away from the center. I don't know how air drag would work out as he's moving closer towards the floor, but even if there were a vacuum and he touches the floor gently, there's buildings stuck to the floor that would smack into him from the side at really fast speed.
This is also historically why launching of satellites or other space-bound rockets and such are done in Florida. The Southern most tip of Florida is as close as you can get to the equator while still remaining in the continuous United States. It's basically "free-energy" for the launch.
Or Guyana. Both are near the equator and with the rockets flying towards the east, any pieces crashing back to Earth land in the ocean. The Soviets went as far south as they could and build their launch sites in Kazakhstan, which has plenty of open desert for debris to fall on. Other great sites for rocket launches would be Kenya or the Philippines. Australia would also work.
These kind of videos, these kind of youtubers and the music of Pink Floyd are the pinnacle of what youtube can offer! Thanks for your great and well explained videos, @ ScienceClick English!
Whenever I hear that music I get all excited because I know I'm going to learn something really really incredible from you. Thank you for teaching everybody your knowledge. I for one thank you from the bottom of my heart ❤ .
In 10 minutes I understood more about Coriolis force than in a semester of physics! It's amazing what good visual animations can do! How much easier will learning be in a few years from now... Please never stop making these videos! You're saving countless human life hours!
It’s not about understanding but also the calculation.
@@rexsovelllejes9383 I guess what @Rainer Wahnsinn means is that some of us , in order to understand we need to first be able to visualize in examples like this before reaching the calculations, or at least in my case will be very hard to assimilate the numbers without understanding the other first. Some other people just needs the numbers and done, and that's ok too.
I love your vids science click, especially those about quantum mechanics
ua-cam.com/video/Pfe2OKKgcjg/v-deo.html 1:35 to prove it doesn't exist.
False! Coriolis might be a thing if spin was the only motion. You must do a vector analysis of all motions, to get the resultant vector of the combined effect of all motions. We can debunk the globe by doing this for just 2 motions: spin + orbit + 21 mm/s/s alternating accel/decel every 12 hours or half revolution, experienced by everything on earth's surface, where is it? Nowhere! A rock balancing statue proves motionless earth.
Rigid body rotation with translation is the physics ua-cam.com/video/AfEbsnOXrX0/v-deo.html
Note the word "rigid" because only solid bodies can spin like a top see flat.wtf
[ flatearthclassroom.blogspot.com/2020/11/centrifugal-force-based-on-rotation-axis-of-body.html ]
And that's the end of the glob!
It wouldn't be a ScienceClic video without ending on a black hole
It wouldn’t be a universe without things ending up at a black hole
@@stdesy and then out of the black hole due to hawking radiation (probably)
@@zyansheep and then in a restart of expansion as spacetime becomes irrelevant due to there only being photons.
@@Pauluzzs then by pure luck enough photons meet to generate black hole
Was waiting for it
For years now I've never really understood the Coriolis force, and just learnt the rules and it's effects to pass tests. This is the first time I've seen it explained in such a clear way, that doesn't dumb it down too much either. Much appreciated.
I like the editing. When the intro is going the music is chill and relaxing but when the Real deal kicks in, the music becomes mysterious, heavy, Eerie.
yes, do you perhaps know the intro music used here?
@@lyan2759 nope
@@lyan2759 soundcloud.com/aroussel
Its the one called "Scienclic" and then "Musique mysterieuse" is the rest of the video.
Nice observations.
@@aghosh5447 kind of my job. I'm an animator, game developer, artist, coder, 3D artist, and recently started learning music. So observation is becoming a habit.
Why is it UA-cam videos do SO MUCH BETTER explaining things we learned in school than the teachers that taught us? And much faster!
I can take a test right after this video and probably get an 85 maybe and be able to retract it to a friend if need be. Next topic! But when taught in school, this one topic could take a few days or a week. I feel as if I’m not understanding it all still and probably get a C+ if lucky taking a test. Retained nothing and not able to explain it back to anyone to save my life!
UA-cam and channels like this were game changers for learning especially if you’re mainly a visual learner.
*I am just a student , but I promise when I start earning , I will make a huge donation to this channel* ❤️
Study hard and give back to your valuable teachers.
🥰🥰
beluga
@@thrash1337 And use your learned skills to do something of value to society.
That's not how you use bold text
9:10 The black hole animation at the end of this video is beautiful.
This always reminds me of me and my friends throwing ball to each other on a spinning roundabout :D The curved trajectories of ball felt almost like sorcery at the time.
thats literally how basic ballistic theories work lol
@@vincentprime740 and people who play on spinning roundabouts are probably nowhere near old enough to understand basic ballistics, so...
@@jmckendry84 wtf is a spinning roundabout?
Hm
@@ispartacus1337 It's like a carousel just... smaller I guess. You know, the thing on playgrounds that spins.
I cannot overstate the quality of these videos, it's clear you put a lot of effort to make them so clear yet so detailed. Excellent work!
Great video
Oh dear its flammable maths on scienceclic channel
0o0 papa flammy on science
g*rman
😍😍
@@ruinenlust_ what are you trying to say?
6:25 all my confusions cleared by this. Thankyou for your amezing illustrations.
Only someone who truly understands a subject could create motion graphics that so plainly demonstrate fundamental physics. Although this is a science channel, this is a masterclass in visualization. So much to learn from this channel despite using a “simple” style… bravo!
Would this also mean that dropping the ball in the centrifuge would appear to cause the ball to drift more towards you?
Yes exactly!
@@ScienceClicEN Could you please make a video about
1.James Maxwell equation
2. Entropy ( when a ball fall down where can we see disorder?)
3. Quantum physics basic
@@whatsup3519
All what you said is comming (its already out in french, just need translation) and is awesome!
@@ScienceClicEN Can you show the mathematics? Its nice to see the math from different frames of reference and how they are equivalent and derived from different starting conditions.
I've seen some old illustrations about how a water fountain shooting water straight up into the air would create strange looking arcs instead of the water coming straight back down.
And if you have enough pressure to reach sufficient height, and tilt the direction of the water jet slightly to the side, the water can do a figure eight path before falling back into the pool.
The very first episode of The Expanse shows something like that with water coming out of a bottle, though the effect might be shown exaggerated based on the size of the station they are in.
Explained much better than my Geography teacher!
Ask your physics teacher!
@@TeslaElonSpaceXFan Still, this is way better.
"Geography is just physics slowed down with a couple of trees stuck in it." - Terry Pratchett
@@TeslaElonSpaceXFan He is much better.
Geagraphy is to physics what Architecture is to Engineering.
Just about the clearest explanations of complex physics topics are on this channel. Great stuff.
This is by far the best explanation of the Coriolis effect. Visual effects and audio comments make this really clear. A great contribution to increasing our understanding of this beautiful planet.
Without question the best explanation of fictitious forces I have ever seen.
What we feel as the force of gravity is a something of a Coriolis effect. It derives from the conservation of all objects' constant velocity thru spacetime, and the way mass slows time with increased proximity to the center of mass. The upper part of an object, farther from a nearby mass than the lower part, and so moving thru time faster than the lower, is "pushed" toward the lower part, causing what seems to be motion toward the center of the nearby mass, in much the same way that a projectile aimed toward the pole of a planet seems to trace a curved path.
Shouldn´t the shape of objects affect the force of gravity then?
@@alepunto7404 i know that the shape of an object can effect it's center of mass and hiw gravity seems to act on it, but i think it'd probably be something more like a 4d shape made of spacetime? Idk don't quote me on that
@@orbismworldbuilding8428 Yes, you are right, it´s better to think in 4D. I guessed that shape could affect gravity because a stick perpendicular to earth would have greater time dilation differential between both ends of the stick than a stick parallel to earth, hence the perpendicular stick should feel more gravity. But I was thinking in 3D. I guess that taking in consideration time as another dimension of the object, the bottom of the object with slower "time speed" its going to slow down the upper part of the object with higher "time speed". And decreasing the "time speed" of the whole object, increases the "space speed", causing the object to start moving towards the earth.
we arent in a constant motion u know, the only motion in space is free falling.
No, you do not get a prize for this nonsense. Nobody knows what gravity is, they just measure it
I was just today thinking about the nature of inertial forces, and wanted someone to explain them to me in a way that didn't seem like cheating, just to restore the invariance of the laws of physics and here this man is!
The Corillis force would be a good way to simply prove that the Earth is a sphere (not quite perfect, but very close to a sphere) and not a disc. You would have to do the experiment with the Folcault pendulum at 3 different locations that are not on a line. In the spherical model, you could use this pendulum to determine the latitude you are standing on. A rigid disc cannot rotate in such a way that the same values as with the sphere would come out.
Unfortunately, just like with every other method to prove the earth is round, the people you would aim to show this to (that don’t already agree with it) will find ways to dismiss it. Very cool comment to bring it up though. Thanks for sharing
@@nikrodox why some people want to believe that flat earth stuff so much is something that is a lot harder to explain than quantum mechanics
You are correct, however flat earthers don't care about stuff like this. They always find some bullshit response. You could fly a flat earther into space for him to see the Earth is spherical and he would say that the windows on the ship were actually tv screens. And that's really sad.
Exactly what I was thinking as well. But to comprehend even simple physics we need brain slightly larger than a pea which is not the case for the group you are talking about!
there are millions of other ways to tell that the earth is a sphere
This youtube channel should be mandataroy to watch and to make it a subject for any one on earth. I swear the intelligence levels would rise significantly world wide.
Indeed
His explanation is totally wrong
i've watched a bunch of science youtube videos, this channel is imho the most underrated one. the way topics are explained and illustrated is genius. thanks a lot for those videos!
Could you please make a video about
1.James Maxwell equation
2. Entropy ( when a ball fall down where can we see disorder?)
3. Quantum physics basic
There are like 10+vids on each subject on different channels
@@rottenpoet6675 no one does these as well as this channel though
That may be the most mind-expanding, eye-opening 10 minutes of video I have ever watched. You literally rocked my whole world and my perceptions of it, in a well thought out and efficient delivery. This is why the internet was invented. Thank you very much.
i really like this channel. the narration and choreography is always on point. thank you for your continued amazing, informative work !
This is the best explanation I've ever heard of coriollis force
Awesome illustration of the centrifugal force and the Coriolis force. I had never heard of the Eotvos Effect! Very cool!
I'm amazed that you've made it though the whole video and didn't mention the word geodesics even once. Great job!
They're back, let's go!
In school we always got "yeah it's more complicated than that actually" but never this clear of an explanation. Thank you!
This is a very good video.
You get a great A+ for saying "øtvøsh" effect. This was a very correct pronunciation of the name of the Hungarian physicist Baron Loránd Eötvös.
Egy kicsit hosszabban ejtette ki az első "ö" hangot (gondolom az archaikus írásmód zavarhatta meg), de tényleg elég jó volt a kiejtése.
Please never change this music!!! It's so engaging
Thank you very much. I had a hard time study coiolis force when I was studying classical mechanics. The animations help me understand the concept much better.
Not only did he give me information about corlois force but an overview of other forces and artificial gravity
When I saw the notification I was very much excited. But when I watched the video.I was amazed by physics once again. Thank you sir🙏🙏
I remember being introduced to the dynamics of angular momentum in my high school physics class in 1952. The force you describe is a primary force in motorcycle "steering", helicopter flight control, and numerous other applications and dynamic scenarios we encounter in the physical world. You will deal with such forces if you study engineering and take courses like differential equations.
I love this channel, makes me want to study Physics.
Great ANALYSIS, to add alongside for future output, corresponding elements connect point to point by measures objects separating time and space.
This is the best explanation and illustration video of the basics of coriolis and eötvös that I have seen… and I have seen many.
Bravo!
Finally I can say I'm not fat, I'm just moving west.
underrated comment right here
His graphics and the way he explained; This the ultimate thing all we wanted, Thanks for these awesome video
Good visual explanation! However, the fact that the astronaut's feet move faster than his head does not make him feel the Coriolis effect and consequently feel the spin, as the Coriolis force only comes into play when something is moving relative to the rotating reference frame, and the astronaut in the example is still stationary in the rotating reference frame. On the other hand, he would feel the spin if he was moving around inside of the rotating system, but then he would feel it regardless of how much faster his feet were spinning than his head.
What if the circle has small radius? It is understandable that angular speed will be the same anywhere in the circle, but the linear speed will be greater at the feet. Will that difference in speed make astronaut feel the differences in that linear speed? And if astronaut feels the difference in linear speed does it mean he/she feels the force?
@@miladestesnai9650 In order for the astronaut to feel a certain thing, that thing has to be measurable. How do you measure a difference in velocity? I’m not sure how you would do that in the general case.
However, if he moves around, which he is likely to do at some point, he will notice that he doesn’t move as he is used to moving when affected by normal gravity on Earth, and measuring this deviation in how he moves (which could be done by some visual tracking system, for example) is a way to measure the Coriolis effect. I’m pretty sure he would feel this deviation unless the rotating wheel was huge or he was moving very, very slowly, even if he wouldn’t be able to put his finger on exactly what was different.
Another effect, which would be measurable even if you remained perfectly still relative to the rotating reference frame, is the deviation in acceleration which causes the artificial gravity. Since the acceleration is proportional to the position relative to the center of rotation (if we assume a 2D system), you will feel that your limbs become heavier the closer to the floor you keep them, and on the contrary, if you for example raise up your arm, it becomes lighter. And your arms will not be pulled what you normally think of as straight down by the artificially gravity, but slightly outwards from your body. But these are effects of the centrifugal force and not of the Coriolis force.
@@kristoferkrus Cheers! Thank you for your time writing the answer! Appreciate it
I'm literally blown away just by the notion that everything moves in a straight line through the universe. I'm 32 and I haven't thought about it or known about it before now. It's a jaw dropping notion
Cool video. However, I'd have to argue that the depiction of trajectories isn't accurate. From the outside, the ball's trajectory always ought to be a straight line.
like at 3:47 ? i agree, the red line should be straight, I think. also, assuming that the red line is straight and the person follows a curved path (straight path is the shorter and faster path), it makes sense that the ball would have greater displacement (from its starting point from where the ball was thrown) and thus land further than where the person would land, which is what I understand the coriolis force to be. please correct me if I'm wrong
5:50 actually happened. The Paris Cannon of 1918 had to aim up to two miles from targets to hit them because of its extreme range.
I feel like calling these forces "fictitious" is misleading or at least unnecessarily confusing. As explained in the video, these forces are *observed* due to the frame of reference. Calling them fictitious and invented implies they're not real in any capacity, but their effects are plain to see.
I think calling them "observed" or "apparent" forces or some similar term without the dismissive connotation would help a lot.
Having finished the video the kinds of terms I described are used after the initial explanation, which I appreciate.
I would be tempted to say that they are fictitious in the sense that they are absolutely undetectable locally (with an accelerometer for example). They are only "detectable" in the sense that they make straight lines look bent in certain coordinate systems. But in the more modern and powerful framework of general relativity these forces don't exist at all.
On the other hand I agree with you that the terms "observed" or "apparent" might be better suited. I especially like "apparent" as it really conveys the idea that they are almost an "optical illusion".
It's kinda like saying that being in a moving train means that ground fictitiously moving relative to you.
The difference is that there is no way to measure "absolute motion", whereas there are ways to measure "absolute forces" (or rather "absolute accelerations")
Calling inertial forces "fictitious" get especially silly once you realize that this includes gravity, which breaks the standard euclidean description of inertial reference frames.
@@ScienceClicEN In German we call it „Scheinkraft“ which equals the term apparent force.
A simpler way of describing this is being in a car moving at a constant speed. If you drop something in the car the item just falls straight down, whereas from an outside perspective it's moving at an angle.
Imagine a flat earther watching this.
If the earth is a disk spinning it would still make sense tho
Imagine mistaking the trajectory of a ball in a centrifuge for the coriolis effect 😂
@@ValidatingUsername Imagine saying that and thinking you know how coriolis works. The cause of that trajectory is literally the coriolis force.
Imagine imagining the image of imaginary imagery
@@GammaFZ Proves earth is flat and He is khalik and knowledgeable ...😜
OMFG, why couldn't that doctor show us this AMAZING VIDEO rather than trying to explain it?! I knew Corriolis effect from past, but never quite understood it to it's fullest.... until now... ;) . Thank you for this! 🧡
Absolutely love this video, found it after watching Scott Manley video about artificial gravity but couldn't visualize how this force works. Your animations are exactly what I was looking for :)
Cool stuff! I was writing a story where in one of the scenes, astronauts are travelling in an elevator up the shaft of a massive centrifuge very rapidly. I imagined the Coriolis effect would manifest and ended up making the astronauts feel a push in the opposite direction of the centrifuge's rotation (if the astronauts didn't hold on to anything, they would tilt sideways as the elevator ascended). It's a bit more exaggerated than it would be in real life but I imagined that was what would happen in such a scenario.
8:12 Thats weird. I mean i get it. I just never thought about it.
So when you throw up something in such an artificial(?) gravity wheel
then it will drop (far) next to you? :D
Imagine getting used to this over years. And then on another planet you are totally lost because everything you throw does behave "weird" again :D
The way Octave Masson narrate it is so good to hear that you can understand simply those complex ideas. Plus the animation is very clear and matches the narration which make this video (and all other ScienceClic videos) perfect and unique!
The vortex in the sink has also this relationship - anticlockwise in northern hemisphere and clockwise in southern...What effect is that?
This is actually a myth go watch Veritasium's video on it :)
Edit: my bad it's just not noticeable in a sink, you have to set up the experiment! It's the coriolis effect too apparently! Sorry!
A sink is so small that the coriolis effect becomes extremely tiny. Such factors as the shape of the sink or weak currents in the water become much more important and completely overpower the much tinier force of the coriolis effect.
this was an emotional eye-opening experience. science is amazing.
Nice videos
Clear. Intuitive. Engaging.
As always, your content is superb, UA-cam gold.
There's no way a single UA-camr owns this channel you must have a whole team or company helping you? Because I could do this with the editing and stuff but would take long
For the translation in English I am helped by Octave, who also does the voice over. Furthermore I am helped with a few people depending on the video, for proofreading. But otherwise for the moment I do everything else on my own (writing, music, images, animations)
@@ScienceClicEN oh ok. Well keep up the great work and hopefully this channel gets it recognition it deserves
great explanation, left no place for doubts.
Came to the comments section to see if there were any flat earthers explaining their pseudoscience theories 😂
People are going to make chem jokes
Physicists could spend their careers investigating gyroscopes.
Very clear explanation! Bonus points for pronouncing Eötvös correctly.
Is this not very similar to general / special relativity ?! Looking at the centrifuge and how the ball goes forward when looking from outside but down when the point of reference is holding the ball
It is very similar. The coriolis and centrifugal forces are pseudo forces that arise from viewing inertially moving things from a rotating (that is non-inertial) reference frame. In general relativity, the force that makes things fall is _exactly the same thing_ . Standing on the surface of earth we are non-inertial observers while freely falling objects are the inertial ones. We see a force pulling them down(like the coriolis force pulls things sideways) but it vanishes in free fall.
"The effective acceleration of gravity at the poles is 980.665 cm/sec/sec while at the equator it is 3.39 cm/sec/sec less due to the centrifugal force. If you weighed 100 pounds at the north pole on a spring scale, at the equator you would weigh 99.65 pounds, or 5.5 ounces less." NASA
Googled it. Just wanted to share.
I've always thought that a centrifuge isn't the best way to make artificial gravity of this type, since of all the issues with construction combined with the issue of Coriolis effect.
Instead, I imagine two spaceships bound by a cable, spinning around the center of the cable, like two people with their arms outstretched. That way, both ships would feel a centrifugal force, and the cable could be made long enough to make the Coriolis effect negligible. Also, this method doesn't require any additional construction on a spaceship, as all it needs is a place to attach the cable, and spacecraft are usually designed to be able to withstand 1g of acceleration.
The problem with your approach is there's going to be much less usable space.
Due to nausea, you're always going to have a bit of waste space in the centrifuge, but you get more "real estate" for the same amount of angular speed than you would get in 2 ships tied together.
I agree that this idea is much better suited for early space travel, as the initial cost and maintenance are probably lower, but the centrifuge is the best bang for your buck
@@AndiAbrudan I agree that you will have less usable space. However it’s essentially impossible to launch a Centrifuge on its own, meaning you’d probably have to assemble it in space, driving up the cost a lot. For this reason, I believe my method has more bang for your buck. Because in order to have a centrifuge of a large enough size that it’s possible to stand up without severe nausea, you would need several spaceships worth of material. Also, available space isn’t usually a concern for astronauts. Apollo astronauts spent weeks crammed into a space the size of a minivan. But yes, in the far future, large full centrifuges may become the norm.
However I also want to mention that both designs are centrifuges. It’s just that my design only uses 1% of the edge of the centrifuge, the rest is just empty space. This means you can have a higher radius to space ratio, helping prevent that sort of force.
Yep. Two Starships dock, tether-up, then use RCS to spin up. Not sure about dynamic stability though, and of course it would only be used in coast phase.
would the cables be able to withstand the stress?
@@ovencake523 I'm sure it could be engineered. You would only need Mars G (0.4 G), and modern aramid fibres are pretty darn strong. You need somewhere between 400 - 800 m of cable, depending on degree of coriolis discomfort. Failure would not be catastrophic, so you could have pretty tight tolerances. Compared to space elevator, it would be easy as. :-)
I've just discovered this channel and I'm already mesmerised and addicted to it ❤
Never heard of this one! Noice
Your talent of explaining is out of this world for me . This Channel is 🎁 👍
So a plane trying to "race the sun" would need more lift than a plane going in the opposite direction?
Sounds logical to me
@@maikv750 Gravity for things on the ground at the equator is still 99% as much as at the poles. That's pretty minor.
Much more important for the lift of planes is the speed by which it moves through the air. How the air is moving over the ground below is irrelevant for the plane, which is why speeds for aircrafts are normally in knots. Knots already specifies that the speed is measured compared to the air or the water something travels to instead of compared to the ground.
Since the air through which the plane travels already experiences the coriolis effect itself, I think it becomes irrelevant as far as planes are concerned.
It does matter for navigation, though. A plane flying straight from north to south has to fly in an arc to actually get where it wants to.
@@Yora21 The commenter was refering to the centrifugal "force" being weakened by racing the sun. This has nothing to do with the coriolis effect.
Every ScienceClic video is a great video
Spent a whole chapter on this in physics…you explained it better than my text book and teacher.
This is a great video, but will unfortunately never get noticed by UA-cam's algorithm due to the title. Try changing it to something along the lines of: "Why Does Traveling East Make You Lighter?". This may seem like clickbait, but as Veritasium has explained just recently, this is both necessary for clickthrough rates, and to encourage viewers who would never care what the the Coriolis force is to actually learn about it.
That's very amazing to think about!!! Best video ive ever seen to explain centrifugal force.
This is the best video on Coriolis. I wonder why isn’t it at the top of the subject “Coriolis.”
FINALLY, I understand why things work the way they do in a spinning space wheel a la "2001", etc. It just never made sense to me until you explained the Coriolis effect. My senses just told me everything should just be free floating. I guess that means that if the wheel wasn't spinning around it's axis, there would not be a Coriolis effect and everything would just float freely like it does in the ISS.
that music is just so perfect... xD Watching these videos is so relaxing and interesting
This is my first video comment on youtube through years. And i just want to say we have to pay those guys because they are absulately amazing ….
Fantastic explanation with amazing graphics!
Great video. Slight correction: Further involves time; farther involves distance.
Wow the visual really makes a difference, these frames of reference were always hard for me to get, but now it's easier! Thank you 😁
Thanx for such a amzing video it cleared of all doubts of coriolis ❤️ I was struggling with coriolis for two months . Thanx again
3:49 Question: Why does the ball take a curved path? In the moment the ball gets released it has 2 components: x, the direction of movement from the wheel at the moment of releasing and y, the direction of the throw. So it should follow a straight line depending on the x,y components.
Does friction play a role here for the curved path?
"it should follow a straight line depending on the x,y components. " ... from the reference point of a motionless outsider. From the perspective of the rotating ball thrower, it the ball take a curved path. Because the observer itself rotate.
Wow! Now that’s an explainer video ! Brilliant job
slowly please, my neurons are flatearthers
You can change video speed
Best video about the Coreolis force i have seen so far on youtube. Thank you!
This is the best science video I've seen in months, maybe years.
This is one of those videos when two-and-a-half minutes into it you go oh I get it now it makes so much perfect sense, thank you so much for this video and by the way you are so awesome thank you for using this music which I love so much!!!
The 'eotvos effect' is so cool!
welcome back to Science Clic...
love your vid.
Very simple for people to understand. When they taught us about Coriolis force back in those days, we hardly understood what they were talking about. We had no computers nor internet.
Great Quality. Great theme. Great Channel.
I was really hoping that the Eotvos effect was a setup for showing the ball seamingly floating weightless while circling the spaceship, with the simpler explanation being that it is stationary and the spaceship is spinning around it.
Still a good video :)
There's a cool scene in the show Babylon 5, where they have a monorail going straight through the center of the station's cylinder. There's an emergency and a character has to jump out, and because he's almost at the center of the cylinder, he's just hovering near the rail.
But since he jumped out, he's slowly drifting away from the center. I don't know how air drag would work out as he's moving closer towards the floor, but even if there were a vacuum and he touches the floor gently, there's buildings stuck to the floor that would smack into him from the side at really fast speed.
This is also historically why launching of satellites or other space-bound rockets and such are done in Florida. The Southern most tip of Florida is as close as you can get to the equator while still remaining in the continuous United States. It's basically "free-energy" for the launch.
Or Guyana. Both are near the equator and with the rockets flying towards the east, any pieces crashing back to Earth land in the ocean.
The Soviets went as far south as they could and build their launch sites in Kazakhstan, which has plenty of open desert for debris to fall on.
Other great sites for rocket launches would be Kenya or the Philippines. Australia would also work.
Great explanation
Thanks❤
Very nice and instructive video. Many thanks.
These kind of videos, these kind of youtubers and the music of Pink Floyd are the pinnacle of what youtube can offer! Thanks for your great and well explained videos, @ ScienceClick English!
This video is so well done. really good explanation, thank you
Glad you liked it!
Amazing......This is called the genuine explanation.
Whenever I hear that music I get all excited because I know I'm going to learn something really really incredible from you. Thank you for teaching everybody your knowledge. I for one thank you from the bottom of my heart ❤ .
This is the only video that made me understand about coriolis force