In case it helps clear up any confusion, here is a video I made that goes over the mathematical derivation of the Coriolis Effect and how it appears when you have a rotating reference frame ua-cam.com/video/uTabQKD2WMs/v-deo.html. In addition, here are all the Flight Mechanics videos in a single playlist ua-cam.com/play/PLxdnSsBqCrrEx3A6W94sQGClk6Q4YCg-h.html. You can support this channel via Patreon at www.patreon.com/christopherwlum. Please let me know what you think in the comments. Thanks for watching!
Can you please explain the formation of cyclones in inertial frame of reference. How would it form if things go in straight line in inertial frame of reference.
Christopher the LIAR.. KEEP regurgitating LIES to yourself FOOL… Is it the plane moving in the air or the earth below? Any 2yr. old KNOWS it’s the plane.. Just how ignorant are you? Read & you’ll know just how ridiculous you sound spewing nonsense.. What a mor-on you are.. LIAR LIAR face diaper on Fire😂 Could you ask ANY US Naval Admiral, any Seamen or any passengers if they’ve ever seen or Filmed any Aircraft Carrier, Warship, boat, canoe, rowboat or even a life raft ever go up over or down any imaginary curvature in ANY Sea 😂 This is what you beLIEve and regurgitate 🤮🤮Could you ask any Air force pilot, Commercial pilot, any pilot or passengers if they’ve ever seen OR Filmed curvature of any land, sea, ice OR ANY of the 100s of 1000s of daily sea going vessels go up over or down any imaginary curvature 🤣This is what you beLIEve and regurgitate 🤣Could you ask ANY of them if they’ve ever seen OR filmed the earth spinning under ANY plane over 1000mph on a 23.4° axis🤣 This is what you beLIEve and regurgitate .. Could you ask ANY Train Conductor or passengers if they’ve ever heard of OR have on FILM any train tracks that go up & down mountains.. This is what you beLIEve and regurgitate 🤣Could you ask ANY Subway Conductor or passengers if they’d ever heard OR Filmed any subway going up & down hills underground.., This is what you beLIEve and regurgitate 😂These are just a few of the ridiculous LIES you beLIEve, BUT you have no proof, not even one VIDEO to prove your delusions you Clown🤡 Why is that? Because you’re LIES don’t exist! But you keep LYING to yourself like an ignorant child beLIEving they do🤣🤡 Don’t you even know a Spherical shape means like a BASKETBALL , TENNIS BALL, BOWLING BALL, SOFT OR HARD BALL, MARBALL, etc.etc. ANY BALL SHAPE?? It means the earth MUST have immediately DOWNWARD Curvature in ALL directions around you✅ This is a scientific FACT! BUT it doesn’t curve at ALL, because there is NO curvature TROLL… Are you smart enough to know that? So just how stupid are you? No where on this earth does the ground drop aka curve downward in ALL directions around you as it MUST to be Spherical dumb dumb.. WoW, are you an ignorant halfwit🤣 You’re just a indoctrinated regurgitating LIAR, who’s never traveled ACROSS this earth but sit in your diarrhea filled diapers down in your basement like a mindless baby😂😂 How pathetic you are.. It’s easy to tell you have absolutely No experience flying, driving, boating, hiking, ice skating, fishing, mountain climbing, playing sports, building anything, etc. etc. especially TRAVEL! You prove you’ve never been in a plane because just looking down using your very OWN EYES proves there’s no curvature seen FOOL.. And anyone who’s past 2 years of age also KNOWS it’s the airplane moving NOT the earth spinning! Time 4U2 Shut up with your nonsense & educate your dumb azz.. Stop LYING to yourself And Travel👍👍 Have some self respect.. There’s only ELEVATIONAL differences on this earth with mountains hills and valleys at different Elevations ABOVE and BELOW Sea LEVEL.. But it’s still a Stationary, Flat & LEVEL surface… Ask a Pilot how & why they use an altimeter! It reads Sea LEVELS to keep them so many feet above the ground not curvature stupid! Then a Gyroscope keeps the plane flying LEVEL.. Ask any pilot if they fly LEVEL ACROSS a LEVEL Plain! They ALL radio the tower to say when they’ve LEVELED OFF… Airplane so named by the Wright Brothers because it is a Machine that flys in the AIR over a PLANE✅ STOP regurgitating and START investigating.. It’s time you educated yourself and have some self respect too! Time 4U2 GrowUp! Visit a shipping port or train terminal dumb dumb! Visit an airport, Runways don’t move & face in all directions... Sea LEVEL, Ground LEVEL, Horizon LEVEL and Eye LEVEL have been called that since man’s beginnings for a reason! Now go change your face diaper as yours is filled with the diarrhea you spew so freely like an indoctrinated IDIOT 😂😂😂 Stop lying to yourself about what this earth really is… It’s not a spinning scientifically impossiBALL sphere!
Hi Christopher. I am an engineer and familiar with the concept of the Coriolis Effect for a long time. But your explanation is one of the best, clearest and simplest of them all. Kudos, very well done. Best regards.
_Really? An _*_engineer_*_ , AND _*_familiar_*_ with the concept of the _*_Coriolis Effect_*_ for a long time!_ _Seems you are _*_familiar_*_ with the _*_Brown Nosing Effect_*_ for a long time as well._
Thank you for taking the trouble to set up this experiment to make it easier for everyone to understand the Coriolis effect, as the saying goes "a picture is worth a thousand words."
AA516: The quality of the video is unmatched. The drone shots and labeled axes really helped me visualize the Coriolis effect and centrifugal acceleration.
This is one of the best science videos I've seen. Clear, well presented, and fun. I came here from a page explaining why the sun's equator spins faster than its poles.
AA516: The best explanation of the Coriolis effect that I have seen. Only thing is that it did take me a while to wrap my head around the cyclone example. If possible for next time could you include an instance with the throwers pov, rotating and non rotating reference frames? Thanks!
Partially agree : if you only care about projectiles, it's okay. But to comprehend the effect fully, the practical experiment here is utterly misleading, it doesn't explain vortex. Even the plane flying north across USA is compared to a projectile like if the air (weather conditions) could be ignored, you can't fly a plane for real and obtain the proposed result 100%, not a good analogy IMO. Not everything is a bullet many times denser than air, and projectile drift due to Earth rotation isn't as dramatic as that tennis ball relative trajectory. You can actually observe the effect with various water drainage device, then go bigger and bigger til the scale of a hurricane across dozen of states, only then you'll understand why the atmosphere seems to get stick to the Earth while being subject to the effect, the human eye doesn't just see it right away, it takes hours to unfold. In this kind of experiments, you must use one or more of three tricks to demonstrate the effect : - speed : go fast enough to reach great distances in order for the human brain to compute observations before loosing track. - scale : reduce the area/volume of experimentation to make things observable - focus : on one observation at a time to ease understanding of each concern. The experiment here reduced the scale of Earth to a mere park playground, and only focused on the kinetic part of a projectile. That's only 5% of everything at play in the Coriolis effect..... I'm afraid most people will only remember the parabolic trajectory of something thrown, then will babble something alike to try to explain vortex in their closet and storms.... very incomplete grasp of the phenomenon.
These demonstrations are invaluable to help visualize the concepts put forward. Excellent dedication, even at the cost of a direct hit or three by the nerf projectiles!
AA516: I enjoyed watching this Lecture! I have heard of the Coriolis Effect before in regards to weather phenomenons and the creation of spiral clouds but learning about the coriolis equation along with the demonstrations in this video has really helped me understand and visualize the Coriolis effect. 12:46 EPIC HEADSHOT!
AA 516: The way that you used visual examples to explain the Coriolis Effect in this video was one of the most informative and helpful demos I've seen. I really appreciate the time you put into making a resource like this!
Hi Anna, I'm a little confused, these videos are very old and should have been watched during the first part of the class. Why are you watching these now?
@@ChristopherLum Hi Professor, I did watch these when they were assigned in class but I realized recently that I didn't comment when I was actually watching them. I am not sure how participation works but I thought I would nevertheless look back and provide some of the thoughts I had while watching these videos. Thanks!
AA 516 : Great demonstration of Coriolis effect.It's so cool that you put so much effort to explain the subject to next level. The cyclone example is so satisfying.
AE512: You know, we spend so much time deriving these equation on pieces of paper, sometimes its hard to really know the implications of our work behind the math. Videos like this are excellent breaths of fresh air, reminding us how cool all our work can be! Thanks so much for making this and the rest of your set!
AA 516: I love the effort that is put in these videos. The real life demonstrations help a lot in understanding what we are talking about. I think it was really cool seeing the trajectories of the balls from the different reference frames and seeing how they vary.
The best past is at 3:32 where they toss the ball back and forth over an alleged spinning Earth and we see ZILCH. Quick spin the merry go round to show Earth spins 😂 You can’t make this stuff up.
" You can't make this stuff up", and Try explaining it to the average Joe. I had a fantastic Ohio State Prof teach it to our class, and its works just like the images she put in my head. 5 Star Video. @@LBBstore
@@rodneycaupp5962 They will start by saying “of course Earth rotates underneath the pendulum” (two reference frames). And then when you ask, “why doesn’t Earth rotate underneath drones or helicopters?” They will say, “Because everything moves as one” (Now all of a sudden one reference frame). So everything appears as if Earth is motionless moving in lockstep (one reference frame) and somehow that proves we have spinning with a Coriolis effect (two reference frames). It is truly like pulling teeth…
This is the best video that I have found so far and it's more than enough in demonstrating coriolis effect. It used different examples that help understand this phenomena. Thank you!
@@ChristopherLum Its disinformation. It needs taking down. Anti-cyclones could not exist at all if Cyclones were caused by earth rotating. They DO exist though... so earth turn is not the cause of cyclones.
@@ChristopherLum But I just have one question: At the time the ball is released from the person in the rotating frame of reference, does the ball not have a velocity component tangent to the circular motion right at the time of release?
AA 516: The view of both reference frame really helped building an intuition for Coriolis effect. The trajectory arrows are really useful as well for visualization as well. Thank you for the great video!
I'm glad it was helpful. There are several related videos on the channel. Please feel free to check them out and I would love to hear what you think in the comments. Thanks for watching!
AA 516: This was actually a really helpful explanation for the Coriolis effect, especially having the overhead drone shot with matching rotation rate. While I've seen the Coriolis effect explained before, I felt like this built a really solid intuition for how it affects large scale changes in the Earth's weather or long distance projectiles.
Thank you very much for this great work and video. The Coriolis effect is also a wonderful analogy for Faraday's law of electromagnetic induction. When the speed of the rotating reference frame changes, meaning the Coriolis field changes, a rotational gravity appears around the platform, similar to the electric field induced by the change in magnetic field density, which is a principle of electric generators.
AE 512 spring 2024: Awesome video! Really all your videos are great. This video in particular helps adjust our intuition when solving these problems. It'd be interesting to see the paths of the objects if the merry-go-round was accelerating, but I'm guessing this may be too much for the participants.
Hi Reyna, Thanks for the kind words, I'm glad you enjoyed the video. If you find these videos helpful, I hope you'll consider supporting the channel via Patreon at www.patreon.com/christopherwlum or via the 'Thanks' button underneath the video. Given your interest in this topic, I'd love to have you a as a Patron as I'm able to talk/interact personally with all Patrons. I can also answer any questions, provide code, notes, downloads, etc. on Patreon. Thanks for watching! -Chris
the direction of deflection depending on where you're aiming. you're assuming the on the northern hemisphere you're aiming south to north, and on the southern hemisphere you're aiming north to south. but each direction will yield a different result, west and east actually changing the apparent "height" of the projectile
AA516: Forgot to comment on this when I watched it the first time but the demonstration of the coriolis effects really helped me understand beyond just the concept on what is physically occuring
AA 516: Thank you for the great video. The video reference in both the rotating and non-rotating frames definitely helped to reveal the conversion of trajectories between frames. Some videos or demonstrations only show one reference frame, such as the rotating and just denote a Coriolis force that acts in the reference frame and causes trajectory deflection, but that doesn't provide much intuition on the connection between trajectories in different frames as this video did.
Young man excellent presentation excellent preparation to teach a Coriolis effect. This video is a bit older and maybe you’re not even checking comments anymore but if so, just wanted to point out excellent job. I’m familiar with the Coriolis effect but only about a year and just started looking into it so there’s gonna be people all the time they’re gonna wanna know a little bit more. again thank you.
Hi REM, Thanks for the kind words, I'm glad you enjoyed the video. If you find these videos helpful, I hope you'll consider supporting the channel via Patreon at www.patreon.com/christopherwlum or via the 'Thanks' button underneath the video. Given your interest in this topic, I'd love to have you a as a Patron as I'm able to talk/interact personally with all Patrons. I can also answer any questions, provide code, notes, downloads, etc. on Patreon. Thanks for watching! -Chris
I have a great example of a practical use for the Coriolis Effect. I am a measurement technician. Industry uses Coriolis Mass Flow meters for metering fluid. These meters use this principle to measure water, oil, gas or any other fluid by weight. (Mass) They are some of the most accurate and dependable meters that I have worked with.
Coriolis effect says it all in Atmospheric Meteorology, Geology, Physics, and a few thousand other phenomenon. I have used Coriolis in all of my Weather Observations and attempts at predicting entire seasons. And for this qtr of the year, in the northern hemisphere, it will be colder than it was in summer, with likely snow events all over America again.
AE512 This was a great way to get my feet wet into the Coriolis effect and what will be a more in-depth dive in the next video. It was great to have the different angles from top down as well as on the merry go round as well.
Hi, First let me say thank you for your generous support of the channel, it is very much appreciated! Do you have any particular interests in terms of videos or topics? I try to prioritize request made by interested parties as much as possible as I plan future videos. If you are interested, I interact personally with all Patreon members at www.patreon.com/christopherwlum. Given your interest in the topic, I'd love to have you as a Patron. In any event, I want to again say thank you for your contribution and for supporting the channel. I hope to hear from you at a future UA-cam video or on Patreon! -Chris
The frame at 7:05 nails it. All motions, for all directions in the CCW rotating frame, appear to bend to the right. The balls paths are not really curving but appear to curve. Now imagine any pendulum swinging in any plane in the Northern hemisphere. Every swing, although actually straight and true, will appear to curve to the right. There's your Foucault Pendulum!
Enjoyed your video but had a few questions? Isn't the earth and the air above it rotating in lockstep? And if so, wouldn't this make the merry go round demonstration not comparable to the spinning earth. For example, when you lifted the drone and hovered it over the merry go round, it never drifted away because of the earth's rotation, but if you lifted the drone off a railroad boxcar traveling at 30 mph, it would not land back in the same place. To equate the merry go round Coriolis to what happens on earth, wouldn't all the conditions have to be the same? The air above the merry go round is not rotating in lockstep with the rotating platform.
What an amazing effort to explain this simply. I sort of remember omega cross omega cross r from engineering class...but never really thought about this being a perceived force.
The merry go round rotates under the hovering drone, how come the rotating earth doesn't rotate under the drone at the equator where the earth rotates over 1500ft per second?
Then it also mean that if i target shoot from east to west the bullet hit the target faster than if i shout from west to east? Micro time of course but still?
Does this mean that if you are competing with bow and arrow, you need to compensate for coreolis effect if you shooting north to south and vice versa. And if you shoot east to west and vise versa you shouldn’t need to compensate? Please i need a answer…
Hi, Thanks for the kind words, I'm glad you enjoyed the video. If you find these videos helpful, I hope you'll consider supporting the channel via Patreon at www.patreon.com/christopherwlum or via the 'Thanks' button underneath the video. Given your interest in this topic, I'd love to have you a as a Patron as I'm able to talk/interact personally with all Patrons. I can also answer any questions and provide code/downloads on Patreon. Thanks for watching! -Chris
Your demo was excellent. However, I've never understood why, in the case of a low pressure system, as air is drawn in it would (by demonstration) deflect AWAY (i.e. to the right, clockwise) from the low center. Of course, satellite observation tells us (in the northern hemisphere) deflection is moving TOWARD (i.e. to the left, counter-clockwise) the low center. This remains a mystery in my mind, and I've been studying weather for decades.
Hi Yiu, Thanks for the kind words, I'm glad you enjoyed the video. If you find these videos helpful, I hope you'll consider supporting the channel via Patreon at www.patreon.com/christopherwlum or via the 'Thanks' button underneath the video. Given your interest in this topic, I'd love to have you a as a Patron as I'm able to talk/interact personally with all Patrons. I can also answer any questions you might have about any of the videos on Patreon. Thanks for watching! -Chris
Hi Mohamed, First let me say thank you for your generous support of the channel, it is very much appreciated! Do you have any particular interests in terms of videos or topics? I try to prioritize request made by interested parties as much as possible as I plan future videos. If you are interested, I interact personally with all Patreon members at www.patreon.com/christopherwlum. Given your interest in the topic, I'd love to have you as a Patron. In any event, I want to again say thank you for your contribution and for supporting the channel. I hope to hear from you at a future UA-cam video or on Patreon! -Chris
Great video, one state to the east of Minnesota would be Wisconsin😮, not Michigan (except one point in Lake Superior). Keep up the good work; I subscribed!
What I got out of this is that you calculate how long your projectile will take to reach the target, then you calculate how far the target will have moved during that time, and you aim that far ahead.
AA 516 - When the 3 balls are thrown simultaneously to illustrate direction of air molecules they curve to the right, they move in a clockwise direction representing the direction of acceleration as viewed by an observer on the North pole. How come then, the direction of the hurricane in the northern hemisphere is counterclockwise? Is the eye of the hurricane the low pressure zone where air is moving towards? In which case it seems like the hurricane should have a clockwise rotation? Or is the air moving outward from the eye and curving to the right giving it its counterclockwise rotation?
@@ChristopherLum [AE512] I have the same question. The balls deflect to the right (and appear to be curving in a clockwise direction), what am I missing? Great demonstration though!
Deflection. Earth rotation velocity at equator is max and decreases as you move towards the poles. Think billiard or snooker balls. A left or right spin on a billiard ball will impart the opposite spin on the other ball. Earth rotation=Counterclockwise rotation >>>imparts Clockwise rotation to the high pressure system air >>> Clockwise rotation High Pressure air moves towards Low Pressure System(becoming a Hurricane), Earth imparts opposite rotation. Therefore, Hurricanes in the northern hemisphere have Counterclockwise rotation.
I don't know if that's youtube doi,g it for you or you made it happen but I swear that the subscribe button is glowing at 10:21 when you say "please subscribe"!
Nice, I see you're getting ahead of the game. If you want to proceed faster keep in mind that while we'll mostly be following the FlightMech series, we'll have occasional modules that are in other areas such as Matlab, Optimization, etc.
Excellent discourse. Don't know if you had considered it, and maybe you did it and I missed it, but I would love to see you offer an analysis of how this would affect artificial gravity in a rotating space station.
In case it helps clear up any confusion, here is a video I made that goes over the mathematical derivation of the Coriolis Effect and how it appears when you have a rotating reference frame ua-cam.com/video/uTabQKD2WMs/v-deo.html. In addition, here are all the Flight Mechanics videos in a single playlist ua-cam.com/play/PLxdnSsBqCrrEx3A6W94sQGClk6Q4YCg-h.html. You can support this channel via Patreon at www.patreon.com/christopherwlum. Please let me know what you think in the comments. Thanks for watching!
Get tf out of of here mate . We are not moving it's so fing obvious
Can you please explain the formation of cyclones in inertial frame of reference. How would it form if things go in straight line in inertial frame of reference.
@@manjuvedi7585 Coriolis is not an actual force its an apparent effect it cant make anything do anything ever
Christopher the LIAR.. KEEP regurgitating LIES to yourself FOOL… Is it the plane moving in the air or the earth below? Any 2yr. old KNOWS it’s the plane.. Just how ignorant are you? Read & you’ll know just how ridiculous you sound spewing nonsense.. What a mor-on you are..
LIAR LIAR face diaper on Fire😂 Could you ask ANY US Naval Admiral, any Seamen or any passengers if they’ve ever seen or Filmed any Aircraft Carrier, Warship, boat, canoe, rowboat or even a life raft ever go up over or down any imaginary curvature in ANY Sea 😂 This is what you beLIEve and regurgitate 🤮🤮Could you ask any Air force pilot, Commercial pilot, any pilot or passengers if they’ve ever seen OR Filmed curvature of any land, sea, ice OR ANY of the 100s of 1000s of daily sea going vessels go up over or down any imaginary curvature 🤣This is what you beLIEve and regurgitate 🤣Could you ask ANY of them if they’ve ever seen OR filmed the earth spinning under ANY plane over 1000mph on a 23.4° axis🤣 This is what you beLIEve and regurgitate .. Could you ask ANY Train Conductor or passengers if they’ve ever heard of OR have on FILM any train tracks that go up & down mountains.. This is what you beLIEve and regurgitate 🤣Could you ask ANY Subway Conductor or passengers if they’d ever heard OR Filmed any subway going up & down hills underground.., This is what you beLIEve and regurgitate 😂These are just a few of the ridiculous LIES you beLIEve, BUT you have no proof, not even one VIDEO to prove your delusions you Clown🤡 Why is that? Because you’re LIES don’t exist! But you keep LYING to yourself like an ignorant child beLIEving they do🤣🤡 Don’t you even know a Spherical shape means like a BASKETBALL , TENNIS BALL, BOWLING BALL, SOFT OR HARD BALL, MARBALL, etc.etc. ANY BALL SHAPE?? It means the earth MUST have immediately DOWNWARD Curvature in ALL directions around you✅ This is a scientific FACT! BUT it doesn’t curve at ALL, because there is NO curvature TROLL… Are you smart enough to know that? So just how stupid are you? No where on this earth does the ground drop aka curve downward in ALL directions around you as it MUST to be Spherical dumb dumb.. WoW, are you an ignorant halfwit🤣 You’re just a indoctrinated regurgitating LIAR, who’s never traveled ACROSS this earth but sit in your diarrhea filled diapers down in your basement like a mindless baby😂😂 How pathetic you are.. It’s easy to tell you have absolutely No experience flying, driving, boating, hiking, ice skating, fishing, mountain climbing, playing sports, building anything, etc. etc. especially TRAVEL! You prove you’ve never been in a plane because just looking down using your very OWN EYES proves there’s no curvature seen FOOL.. And anyone who’s past 2 years of age also KNOWS it’s the airplane moving NOT the earth spinning! Time 4U2 Shut up with your nonsense & educate your dumb azz.. Stop LYING to yourself And Travel👍👍 Have some self respect.. There’s only ELEVATIONAL differences on this earth with mountains hills and valleys at different Elevations ABOVE and BELOW Sea LEVEL.. But it’s still a Stationary, Flat & LEVEL surface… Ask a Pilot how & why they use an altimeter! It reads Sea LEVELS to keep them so many feet above the ground not curvature stupid! Then a Gyroscope keeps the plane flying LEVEL.. Ask any pilot if they fly LEVEL ACROSS a LEVEL Plain! They ALL radio the tower to say when they’ve LEVELED OFF… Airplane so named by the Wright Brothers because it is a Machine that flys in the AIR over a PLANE✅ STOP regurgitating and START investigating.. It’s time you educated yourself and have some self respect too! Time 4U2 GrowUp! Visit a shipping port or train terminal dumb dumb! Visit an airport, Runways don’t move & face in all directions... Sea LEVEL, Ground LEVEL, Horizon LEVEL and Eye LEVEL have been called that since man’s beginnings for a reason! Now go change your face diaper as yours is filled with the diarrhea you spew so freely like an indoctrinated IDIOT 😂😂😂 Stop lying to yourself about what this earth really is… It’s not a spinning scientifically impossiBALL sphere!
Please explain to me what would happen if it was a hemisphere and the outer perspective was laying down
Hi Christopher. I am an engineer and familiar with the concept of the Coriolis Effect for a long time. But your explanation is one of the best, clearest and simplest of them all. Kudos, very well done. Best regards.
_Really? An _*_engineer_*_ , AND _*_familiar_*_ with the concept of the _*_Coriolis Effect_*_ for a long time!_ _Seems you are _*_familiar_*_ with the _*_Brown Nosing Effect_*_ for a long time as well._
Earth does not move. Coriolis effect proves airplanes could not go to their goals if the Earth were spinning.
Wake up!!
💯 💯 💯
Thank you for taking the trouble to set up this experiment to make it easier for everyone to understand the Coriolis effect, as the saying goes "a picture is worth a thousand words."
AA516: The quality of the video is unmatched. The drone shots and labeled axes really helped me visualize the Coriolis effect and centrifugal acceleration.
This is one of the best science videos I've seen. Clear, well presented, and fun. I came here from a page explaining why the sun's equator spins faster than its poles.
AA516: The best explanation of the Coriolis effect that I have seen. Only thing is that it did take me a while to wrap my head around the cyclone example. If possible for next time could you include an instance with the throwers pov, rotating and non rotating reference frames? Thanks!
This way of illustrating the Coriolis effect is simply genial!
Partially agree : if you only care about projectiles, it's okay. But to comprehend the effect fully, the practical experiment here is utterly misleading, it doesn't explain vortex. Even the plane flying north across USA is compared to a projectile like if the air (weather conditions) could be ignored, you can't fly a plane for real and obtain the proposed result 100%, not a good analogy IMO. Not everything is a bullet many times denser than air, and projectile drift due to Earth rotation isn't as dramatic as that tennis ball relative trajectory. You can actually observe the effect with various water drainage device, then go bigger and bigger til the scale of a hurricane across dozen of states, only then you'll understand why the atmosphere seems to get stick to the Earth while being subject to the effect, the human eye doesn't just see it right away, it takes hours to unfold. In this kind of experiments, you must use one or more of three tricks to demonstrate the effect :
- speed : go fast enough to reach great distances in order for the human brain to compute observations before loosing track.
- scale : reduce the area/volume of experimentation to make things observable
- focus : on one observation at a time to ease understanding of each concern.
The experiment here reduced the scale of Earth to a mere park playground, and only focused on the kinetic part of a projectile. That's only 5% of everything at play in the Coriolis effect..... I'm afraid most people will only remember the parabolic trajectory of something thrown, then will babble something alike to try to explain vortex in their closet and storms.... very incomplete grasp of the phenomenon.
Best explanation I ever encountered. My teacher shared this video in the classroom for any further explanation.
These demonstrations are invaluable to help visualize the concepts put forward. Excellent dedication, even at the cost of a direct hit or three by the nerf projectiles!
testing
AA516: I enjoyed watching this Lecture! I have heard of the Coriolis Effect before in regards to weather phenomenons and the creation of spiral clouds but learning about the coriolis equation along with the demonstrations in this video has really helped me understand and visualize the Coriolis effect. 12:46 EPIC HEADSHOT!
Best demonstration of the Coriolis effect I have seen. Top!
AA 516: The way that you used visual examples to explain the Coriolis Effect in this video was one of the most informative and helpful demos I've seen. I really appreciate the time you put into making a resource like this!
Hi Anna, I'm a little confused, these videos are very old and should have been watched during the first part of the class. Why are you watching these now?
@@ChristopherLum Hi Professor, I did watch these when they were assigned in class but I realized recently that I didn't comment when I was actually watching them. I am not sure how participation works but I thought I would nevertheless look back and provide some of the thoughts I had while watching these videos. Thanks!
HOLY crap! This video was absolutely amazing. What an incredible source of information! A working merry-go-round? In America? It can't possibly be.
call the insurance company… they missed one!
AA 516 : Great demonstration of Coriolis effect.It's so cool that you put so much effort to explain the subject to next level. The cyclone example is so satisfying.
AE512: You know, we spend so much time deriving these equation on pieces of paper, sometimes its hard to really know the implications of our work behind the math. Videos like this are excellent breaths of fresh air, reminding us how cool all our work can be! Thanks so much for making this and the rest of your set!
AA 516: I love the effort that is put in these videos. The real life demonstrations help a lot in understanding what we are talking about. I think it was really cool seeing the trajectories of the balls from the different reference frames and seeing how they vary.
The best past is at 3:32 where they toss the ball back and forth over an alleged spinning Earth and we see ZILCH. Quick spin the merry go round to show Earth spins 😂 You can’t make this stuff up.
" You can't make this stuff up", and Try explaining it to the average Joe. I had a fantastic Ohio State Prof teach it to our class, and its works just like the images she put in my head. 5 Star Video. @@LBBstore
@@rodneycaupp5962
They will start by saying “of course Earth rotates underneath the pendulum” (two reference frames). And then when you ask, “why doesn’t Earth rotate underneath drones or helicopters?” They will say, “Because everything moves as one” (Now all of a sudden one reference frame).
So everything appears as if Earth is motionless moving in lockstep (one reference frame) and somehow that proves we have spinning with a Coriolis effect (two reference frames).
It is truly like pulling teeth…
in short, very good demonstration of an effect. easy to follow and understand. cheers.
This is the best video that I have found so far and it's more than enough in demonstrating coriolis effect. It used different examples that help understand this phenomena. Thank you!
I'm glad it was helpful, thanks for watching!
@@ChristopherLum Its disinformation. It needs taking down. Anti-cyclones could not exist at all if Cyclones were caused by earth rotating. They DO exist though... so earth turn is not the cause of cyclones.
@@ChristopherLum But I just have one question: At the time the ball is released from the person in the rotating frame of reference, does the ball not have a velocity component tangent to the circular motion right at the time of release?
AA 516: The view of both reference frame really helped building an intuition for Coriolis effect. The trajectory arrows are really useful as well for visualization as well. Thank you for the great video!
This is the real deal, the exact demo I ever wanted.
I'm glad it was helpful. There are several related videos on the channel. Please feel free to check them out and I would love to hear what you think in the comments. Thanks for watching!
Thank you so much brother....it helped me to actually imagine how the person in the rotating frame would see😊😊😊
[AE 512] 5:58
The visual captured here is extremely helpful in understanding Coriolis
Very pragmatic and visual explanation.
Good job.
AA516: Great video for developing intuition of the Coriolis effect. The cyclone example is really interesting!
AA516: Good demonstration of the Coriolis Effect. I liked the explanation of how it ties into dead reckoning navigation as well.
AA 516: This was actually a really helpful explanation for the Coriolis effect, especially having the overhead drone shot with matching rotation rate. While I've seen the Coriolis effect explained before, I felt like this built a really solid intuition for how it affects large scale changes in the Earth's weather or long distance projectiles.
Thank you very much for this great work and video. The Coriolis effect is also a wonderful analogy for Faraday's law of electromagnetic induction. When the speed of the rotating reference frame changes, meaning the Coriolis field changes, a rotational gravity appears around the platform, similar to the electric field induced by the change in magnetic field density, which is a principle of electric generators.
i prepare for indian civil services examination................i am pleased to understand the concept with your helpful effort
love from india
AE512: I really enjoyed the merry-go-round demo! Definitely my favorite!
AE 512: Great explaniation. as always, appreciate the effort put into these videos.
The coolest Coriolis 🐚 demo ever‼️ My compliments, thumb's up and my subscription's on 👏🏻👍🏼 I'm looking forward to watching the next video 😎
This was fun. Enjoyed it bunches. Give us more like this, PLEASE!
🥺
🙏
AA516: Experiments using marry-go-around clearly showed how the Coriolis effect works in real. It was so helpful and fun!
I love this visual demo. Thank you so much!!! It helps a lot for my physics course.
AE 512 spring 2024: Awesome video! Really all your videos are great. This video in particular helps adjust our intuition when solving these problems. It'd be interesting to see the paths of the objects if the merry-go-round was accelerating, but I'm guessing this may be too much for the participants.
AA 516: It was a very good explanation, especially the weather section.
Oh my god, this is the best channel, you just cleared my doubts
Doubts about what?
AA 516: Great explanation and demo of the Coriolis Effect!
How could I have missed this amazing channel!! Love from Sweden 💛💙
Hi Reyna,
Thanks for the kind words, I'm glad you enjoyed the video. If you find these videos helpful, I hope you'll consider supporting the channel via Patreon at www.patreon.com/christopherwlum or via the 'Thanks' button underneath the video. Given your interest in this topic, I'd love to have you a as a Patron as I'm able to talk/interact personally with all Patrons. I can also answer any questions, provide code, notes, downloads, etc. on Patreon. Thanks for watching!
-Chris
Finally a good video on the coriolis effect!
This is the best video I've seen on gaining an intuition for the Coriolis effect! Thank you!
the direction of deflection depending on where you're aiming. you're assuming the on the northern hemisphere you're aiming south to north, and on the southern hemisphere you're aiming north to south. but each direction will yield a different result, west and east actually changing the apparent "height" of the projectile
Jason-AE512: I can't imagine lecture video can be this insteresting and detailed.
AE512 Those slow motion captures with arrows really helped my understanding!
AA516: Forgot to comment on this when I watched it the first time but the demonstration of the coriolis effects really helped me understand beyond just the concept on what is physically occuring
AA 516: Thank you for the great video. The video reference in both the rotating and non-rotating frames definitely helped to reveal the conversion of trajectories between frames. Some videos or demonstrations only show one reference frame, such as the rotating and just denote a Coriolis force that acts in the reference frame and causes trajectory deflection, but that doesn't provide much intuition on the connection between trajectories in different frames as this video did.
AE512: love the hands on demonstration with props!
Within a half minute I new this channel was pure science meat.
After I watched I was satiated with my updated understanding. Thanks.
ps I subscribed
[AA 516] Really helpful demonstration of why rotating frames affect vectors, I liked the arrow overlay demonstrating how the "curved" path occurs.
Will, thanks for the feedback. Please let me know how things go as the quarter progresses!
Young man excellent presentation excellent preparation to teach a Coriolis effect. This video is a bit older and maybe you’re not even checking comments anymore but if so, just wanted to point out excellent job. I’m familiar with the Coriolis effect but only about a year and just started looking into it so there’s gonna be people all the time they’re gonna wanna know a little bit more. again thank you.
Hi REM,
Thanks for the kind words, I'm glad you enjoyed the video. If you find these videos helpful, I hope you'll consider supporting the channel via Patreon at www.patreon.com/christopherwlum or via the 'Thanks' button underneath the video. Given your interest in this topic, I'd love to have you a as a Patron as I'm able to talk/interact personally with all Patrons. I can also answer any questions, provide code, notes, downloads, etc. on Patreon. Thanks for watching!
-Chris
Really awesome demo! Also I'd like to see more Gus in future videos because he is a good boy
AE 512 Great example of the Coriolis Effect.
I have a great example of a practical use for the Coriolis Effect.
I am a measurement technician. Industry uses Coriolis Mass Flow meters for metering fluid.
These meters use this principle to measure water, oil, gas or any other fluid by weight. (Mass)
They are some of the most accurate and dependable meters that I have worked with.
AE512: Watching you have fun with this demonstration made the topic infinitely more interesting, I suddenly want to go find a merry go round near me.
Coriolis effect says it all in Atmospheric Meteorology, Geology, Physics, and a few thousand other phenomenon. I have used Coriolis in all of my Weather Observations and attempts at predicting entire seasons. And for this qtr of the year, in the northern hemisphere, it will be colder than it was in summer, with likely snow events all over America again.
Do snipers need to adjust for the Coriolis effect?
No. They don't.
Depends on the shot
AE512 This was a great way to get my feet wet into the Coriolis effect and what will be a more in-depth dive in the next video. It was great to have the different angles from top down as well as on the merry go round as well.
Those analogies are busting me up!
Jacob, thanks for watching, we'll keep the analogies coming in the future videos, standby...
Thanks!
Hi,
First let me say thank you for your generous support of the channel, it is very much appreciated!
Do you have any particular interests in terms of videos or topics? I try to prioritize request made by interested parties as much as possible as I plan future videos.
If you are interested, I interact personally with all Patreon members at www.patreon.com/christopherwlum. Given your interest in the topic, I'd love to have you as a Patron.
In any event, I want to again say thank you for your contribution and for supporting the channel. I hope to hear from you at a future UA-cam video or on Patreon!
-Chris
The frame at 7:05 nails it. All motions, for all directions in the CCW rotating frame, appear to bend to the right. The balls paths are not really curving but appear to curve. Now imagine any pendulum swinging in any plane in the Northern hemisphere. Every swing, although actually straight and true, will appear to curve to the right. There's your Foucault Pendulum!
Pretty good, well done 👏🏼
My thanks! Wonderful, thorough work!
Enjoyed your video but had a few questions? Isn't the earth and the air above it rotating in lockstep? And if so, wouldn't this make the merry go round demonstration not comparable to the spinning earth. For example, when you lifted the drone and hovered it over the merry go round, it never drifted away because of the earth's rotation, but if you lifted the drone off a railroad boxcar traveling at 30 mph, it would not land back in the same place. To equate the merry go round Coriolis to what happens on earth, wouldn't all the conditions have to be the same? The air above the merry go round is not rotating in lockstep with the rotating platform.
Thank you, Christopher Lum. Good explanation of the Coriolis Effect.
What an amazing effort to explain this simply. I sort of remember omega cross omega cross r from engineering class...but never really thought about this being a perceived force.
AA 516 Very innovative Explanation !!
Great video. At 11:20, that's Wisconsin, not Michigan. HTH.
The merry go round rotates under the hovering drone, how come the rotating earth doesn't rotate under the drone at the equator where the earth rotates over 1500ft per second?
Momentum.
AE512: Very enjoyable to learn and entertaining along with your video. :)
Excellent video.
@8:25 Vacuums doesn't "suck". Three air molecules will not be "pulled" into a low pressure system. Words do matter for understanding.
Family sitting in the background waiting for these grown ups to finish blocking the merry-go-round...
is there any effect on an aircraft flying due east-west, instead of north-south?
brother, can i use your method to teach my students?
Then it also mean that if i target shoot from east to west the bullet hit the target faster than if i shout from west to east? Micro time of course but still?
AE 512
Very cool to see real life examples that match up with theory.
Counter clockwise, what are we counting? complete rotations ?
If someone was shooting a rifle would the Coriolis effect change the trajectory of the bullet?
Really great explanation! Thank you so much! :)
Does this mean that if you are competing with bow and arrow, you need to compensate for coreolis effect if you shooting north to south and vice versa. And if you shoot east to west and vise versa you shouldn’t need to compensate? Please i need a answer…
Amazing 👏🙀😯 demonstration♡♡♡
Hi,
Thanks for the kind words, I'm glad you enjoyed the video. If you find these videos helpful, I hope you'll consider supporting the channel via Patreon at www.patreon.com/christopherwlum or via the 'Thanks' button underneath the video. Given your interest in this topic, I'd love to have you a as a Patron as I'm able to talk/interact personally with all Patrons. I can also answer any questions and provide code/downloads on Patreon. Thanks for watching!
-Chris
Excellent explanation and work
Fernando, thank for the kind words and for watching, I hope it was helpful!
Your demo was excellent.
However, I've never understood why, in the case of a low pressure system, as air is drawn in it would (by demonstration) deflect AWAY (i.e. to the right, clockwise) from the low center.
Of course, satellite observation tells us (in the northern hemisphere) deflection is moving TOWARD (i.e. to the left, counter-clockwise) the low center.
This remains a mystery in my mind, and I've been studying weather for decades.
What would it look like if two people played catch on the merry-go-round from an overhead perspective?
Thanks a lot for your kindly help to make me understand the unbelievable force with best wish to you.
Hi Yiu,
Thanks for the kind words, I'm glad you enjoyed the video. If you find these videos helpful, I hope you'll consider supporting the channel via Patreon at www.patreon.com/christopherwlum or via the 'Thanks' button underneath the video. Given your interest in this topic, I'd love to have you a as a Patron as I'm able to talk/interact personally with all Patrons. I can also answer any questions you might have about any of the videos on Patreon. Thanks for watching!
-Chris
Trust me bro ,I'm a master's student but I sucked at understanding at deep level andmu did it, damn ur the best
Great video.. Thanks very much
Hi Mohamed,
First let me say thank you for your generous support of the channel, it is very much appreciated!
Do you have any particular interests in terms of videos or topics? I try to prioritize request made by interested parties as much as possible as I plan future videos.
If you are interested, I interact personally with all Patreon members at www.patreon.com/christopherwlum. Given your interest in the topic, I'd love to have you as a Patron.
In any event, I want to again say thank you for your contribution and for supporting the channel. I hope to hear from you at a future UA-cam video or on Patreon!
-Chris
Nice presentation 👍
Great video, one state to the east of Minnesota would be Wisconsin😮, not Michigan (except one point in Lake Superior). Keep up the good work; I subscribed!
How about in spherical trigonometry? Quaternions?
AE512: This definitely helps clear up some of the unintuitiveness surrounding Coriolis effects.
What I got out of this is that you calculate how long your projectile will take to reach the target, then you calculate how far the target will have moved during that time, and you aim that far ahead.
AA 516 - When the 3 balls are thrown simultaneously to illustrate direction of air molecules they curve to the right, they move in a clockwise direction representing the direction of acceleration as viewed by an observer on the North pole. How come then, the direction of the hurricane in the northern hemisphere is counterclockwise? Is the eye of the hurricane the low pressure zone where air is moving towards? In which case it seems like the hurricane should have a clockwise rotation? Or is the air moving outward from the eye and curving to the right giving it its counterclockwise rotation?
John, they move in a CCW pattern. Does the demo at 9:35 make sense?
@@ChristopherLum [AE512] I have the same question. The balls deflect to the right (and appear to be curving in a clockwise direction), what am I missing? Great demonstration though!
@@masospaghetti They eventually settle into a CCW pattern. Does the demo at 9:35 make sense?
Deflection. Earth rotation velocity at equator is max and decreases as you move towards the poles.
Think billiard or snooker balls. A left or right spin on a billiard ball will impart the opposite spin on the other ball.
Earth rotation=Counterclockwise rotation >>>imparts Clockwise rotation to the high pressure system air >>>
Clockwise rotation High Pressure air moves towards Low Pressure System(becoming a Hurricane), Earth imparts opposite rotation. Therefore, Hurricanes in the northern hemisphere have Counterclockwise rotation.
00:30 - coordinate frames vectors and WHAT? Your voice muted there as you were speaking.
love you for your effect ....its called lum effect
Wha is wro with the sou on this video?
I don't know if that's youtube doi,g it for you or you made it happen but I swear that the subscribe button is glowing at 10:21 when you say "please subscribe"!
AE 512: This was great to reference while watching the next lecture to see what the math was doing.
Great explanation!!!!
AA 516: Fun demonstration!
Nice, I see you're getting ahead of the game. If you want to proceed faster keep in mind that while we'll mostly be following the FlightMech series, we'll have occasional modules that are in other areas such as Matlab, Optimization, etc.
Excellent discourse. Don't know if you had considered it, and maybe you did it and I missed it, but I would love to see you offer an analysis of how this would affect artificial gravity in a rotating space station.