Best Demonstration of Coriolis Effect on YouTube
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- เผยแพร่เมื่อ 14 ต.ค. 2024
- Coriolis force (Coriolis effect) demonstration using a rotating parabolic dish. In addition to using a rotating camera (noninertial reference frame), we also show the motion of marble using a stationary camera (inertial reference frame). The experiment is performed in our undergraduate laboratory at the Department of Atmospheric and Oceanic Sciences at McGill University.
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The coriolis effect is a pathway to abilities some consider unnatural
Supernatural some might say
Anneken tried it.
Wonder what it would look like in 3 dimensions with the marble getting smaller and larger?
@@justaguywhoplaysfalloutsom1104 I'm lost, can you explain?
@@xsarchitect he looks like cass from supernatural
He's such a good detective that he discovered the best way to demonstrate the Coriolis effect.
haha indeed!
@@DjordjeRomanicbravo druže, svaka čast na ideji za videe 😉. Ta laboratorija će ti biti nepresušan izvor motivacije, samo monetizuj i ako jesi piči 👏
He demonstrated that the coriolis effect is not real..!
This man is so powerful, he judged physics' performance.
"Ball rolls in straight line"
*intense watching as the ball and physics desperately act*
"excellent"
Explaining science in one moment, solving 1930s crime mysteries the next.
I wish I was at least 1% as cool as this guy.
Absolutely fantastic demonstration. This can truly show anyone why it's a "fictitious" force, because it depends solely on the reference frame. Plus you're well dressed.
Edit: Well a guy who puts "QED" at the end of his youtube comments like this is a serious forum replied to me with a long ramble contradicting what I thought I knew, the physics guy knew, and my physics teacher knew, and my dad knew, and a bunch of my friends knew and I was like "I don't want to say something untoward and I'm too busy to read all that", then I revised it to try to hint about why language might be the confusion factor, and now I'm realizing my notifications are never going to say less than the maximum number for a while so that's cool I guess. 🥴
Much obligled.
Coriolis force is not fictitious. Imagine a rod rotating about one end. Now imagine a mass that is constrained to slide along the rod from the centre towards the moving end. As the mass moves radially outward it picks up tangential velocity ie: it accelerates in the tangential direction. The mass experiences a force normal to the rod that keeps its tangential velocity the same as the rods tangential velocity at every point.
That force is the Coriolis force.
No imagine that the same mass but it is not constrained to move along the rod. Since no forces act on the mass its tangential velocity does not increase as it moves away from the centre of rotation and it falls behind the rod. Coriolis force does not act in this case and the mass appears to describe a curve path with respect to the non-interial frame, but a straight path wrt to the inertial frame. That’s why its called the Coriolis “Effect.” QED
@@OneEyedJacker I'll have to think about this. Thanks for taking the time to write it up.
Edit: I've been too busy to really think much about it so far, but I did want to add, I have always thought that terms like "fictitious" were a little dodgy to begin with. As in, for example, there are plenty of reasons to call a mirage an "illusion" but, it is also perfectly reasonable to say that because it is a phenomena with an underlying mechanism, it is also "really there". It may indeed come down to definitions of terms, and what is precisely being called "illusory" or "fictitious". I'll find a moment to dig into what you wrote and do it justice one of these days. 😔 (I should add, I am not trying to cast doubt on anything you said, I'm explicitly saying I haven't really had the mental bandwidth given everything going on for me and my own job to think very deeply about a youtube comment. I just wanted to gripe a little about the language we use sometimes to refer to technical things which can be misleading.)
Yes, there is no force involved and also there is not any difference of trajectory in the two views. Only an optical illusion. The motion of the ball in the dish is always cycloid if the dish is rotating. What do they claim is the meaning of the this effect? Something weird I bet.
@@OneEyedJacker, the force that you refer to as the Coriolis force is not actually Coriolis. In your example, the tangential force that drags the constrained mass in the azimuthal direction is real indeed, but that is not the Coriolis force in question. In your second example, where the mass is not constrained, you correctly state that the mass will fall behind the rotating rod. From the perspective of this rod, the mass is pushed back. That is the fictitious Coriolis force that “pushes” the mass. You are right that there is no actual force since the mass is moving in a straight line in an inertial frame. That is precisely why the Coriolis force is fictitious.
I can understand why this misconception might have arisen. The video can be a little bit misleading because there is friction that drags the balls along the rotation, and this dragging force is real. Maybe it would have been better to showcase the effect with sliding objects instead. The cycloidal motion would still be present in the rotating frame.
Okay, but why is he dressed like a 1940's film noir detective?
Inspector Gadget
I dunno but i'm here for it
Yah, like a KGB agent!
Because he can
He’s frkn cool like that. I like this guy
Yes, that was the best demonstration of the coriolis effect I’ve ever seen. Good work.
Thanks 👍
I love how simple practical experiments can demonstrate complex mathematical concepts. Thank you!!
I will be watching more of your videos.
I am glad you liked it!
@@DjordjeRomanic
Just more proof that the earth is flat. Thank you for your contribution to the truth seeker movement. 🙏
@@whattha930 Not sure if troll. As a marksmanship instructor, I know enough about Earth's curvature and rotation to know that if you're being serious with this comment, you know little to nothing about geophysics.
@@somedude4805
Not sure if troll you.
If you were in the military, your opinion is invalid.
Don't think of it as a mathematical concept. It's a simple physics concept. We use math to simplify physics concepts so wa can predict or approximately predict what will happen. Getting the prediction more and more accurate makes the math more and more complex.
I don't know why TH-cam chose me as one of the few first viewers, but this is a very good illustration! I will steal that to show to students
*James Bond: **_"Do you expect me to talk, Dr. Coriolis!?!?_*
*Dr. Coriolios: **_"No, Mr. Bond! I expect you to experience acceleration in a non-inertial reference frame!"_*
😂
*To look at both screens simultaneously is to reignite the physical essence of mathematical wonder !*
Thank you, most sincerely ...
My pleasure. Have a great day.
..and now I understand why its called the coriolis "effect". True path vs apparent path. Thank you!
You're very welcome!
The clearest demonstration of why Coriolis force is not really a force that I have seen. Thank you.
Nice to see someone being so intelligently appreciative of a phenomenon.
Thank you. Much appreciated.
I agree, he is pretty awsome
Wow this is genius. I always could comprehend the Coriolis force, but this truly makes sense to me. Thank toy
I allways wanted to understand physics but my teacher wasn't good at delivering information, you sir are on another level 👏
Thank you for your kind words.
“Clothes make the man. Naked people have little or no influence in society.” (Mark Twain)
„Nah“. Said any naked football game streaker probably.
Mark Twain said that before tiktok 😢
IDK, Carbi B was a stripper and reality TV star, now she is rich and famous. Lack of clothes didn't seem to slow her down any.
He's Professor Gadget
however nekked women do
Your demonstration is mesmerizing, thank you for taking the time!
Thank you very much.
Very nice, thank you. We did the theory in school, but I never saw it in practice. It's far more relevant to see it in this way than on a computer graphics simulation!
Glad it was helpful!
I like the "Inspector Gadget" Jacket there Djorje.
An often-misunderstood phenomenon very well explained indeed!
Thank you. Much appreciated.
What flerfer nightmares are made of.
Love the subway flasher trenhcoat. Popped collar too, for extra special effect.
Beautiful!!
Is it bragging if you can back it up? No. This is the best practical demonstration of this force on YT.
Thank you very much.
Thanks for such a clear explanation.
Your English is excellent and your accent makes it even more interesting!
Glad you think so!
Very good and very clear presenter. Brilliant
Many thanks!
In Seattle, back in the 1970s, at the corner of 45th and University Way was a drinking fountain that pivoted around the center but the stream was towards the center. When you rotated it the water would curve in the 'wrong' way. Great demonstration.
Haha. I've seen this effect in lab eyewash fountains that rotate on center, with two opposing streams.
Simple, effective and easily understood.
Maybe that’s easy for you to say!
Excellent description, thank you!
You're welcome!
That's pretty cool. Makes it easier to understand
Excellent!
"that's very interesting, but how will this help us catch Lupin?"
That is a brilliant demonstration of the Coriolis force.
Thanks. Much apricated.
Fantastic demonstration
Many thanks!
this is amazing, as i am amazed by the example. thank you...
I am glad to hear that. You are welcome.
Finally understand it. Very simple to have intuitive understanding with such good demonstration.
I am glad to hear that!
Excellent demonstration sir! Was searching for these sort of demonstrations (as well as showing it mathematically, which you have done in other videos). Subscribed!
Thank you. See you in the next video.
WOW, that was way above the old dumb plumber that I am, but I am still trying to learn. Subscribed. My mind is officially blown.
I have enormous respect for tradesmen. Enormous!! If a person learns only 1 new thing every day, you will accumulate an enormous knowledge over life.
Perspective is everything
Excellent demonstration, Thanks for the video. The curvature if the motion changes w.r.t reference point. What is the actual motion, straight line? What happens if you put a wet paint ball, will it draw straight lines?
As a scientist I have to say you have made the best explanation so far or maybe ever of Coriolis force. You really know your stuff. Congratulations! This is a great discovery and show at the same time. I will pass on this link to my fellows.
Thank you! Much appreciated.
I’d never heard of the Coriolis effect before this video. Now I’m hyper about the food dye version of the explanation lol. Thank you, sir!
"My name is Giovanni Giorgio, but everyone calls me Giorgio"
Very interesting. Good job on showing the corolis effect.
Glad you liked it!
Amazing
Thank you! Cheers!
Amazing demonstration. Thank you!
You're very welcome!
Thank you Chief inspector.
You are welcome.
Simple and brilliant!
Thank you! Cheers!
I like your elegance
"This is water" in the thickest accent possible had me snorting unexpectedly
Great demonstration for understanding reference frames.
Clicked for the coat.
Stayed for the learn.
Sookah.
Nicely done demonstration with 2 cameras showing showing the frames. Subscriber #894 here so I'm looking forward to more adventures in physics. Montreal gets nippy so I'm also looking forward to other cold weather wear such as toques and maybe you could do some physics featuring poutine, just a thought.
Or crepes... Actually, I already have that one.
This is beautiful I consider the Coriolis force in generating a magnetic field or electricity. Maybe a key to free energy.
You can find two videos on the Coriolis force and electromagnetic phenomena in my playlist on the Coriolis force. When it comes to the Coriolis force, please keep in mind that it can not change the speed of an object, only the direction. So, this force does no work. I also have separate videos on that.
Thank you, Fellow!
You are welcome.
Excellent mate. New subscriber ✌🏻
Thanks and welcome.
VERY happy to receive a science lesson from Romanian Constantine.
Fascinating.Endlessly fascinating.Thank You Sir!🌞
“camera follow me” had the same laugh factor as bill hader’s “camera 3 push in”
Fascinating!
"This is no time for caution, Dr Romanic."
"CASE if I black out you take the stick."
The Coriolis effect comes up in accurate long range shooting. I can accept the need to adjust for it but, did not have a good understanding of why. Now I understand.
I also appreciate the example of the inertial and non-inertial reference planes.
I am now more amazed at the understanding of physics needed to hit a target with indirect fire.
I went to a shooting range in Texas and then calculated the bullet deflection caused by the Coriolis force. Check out that video. Although it's not long range shooting to be fair.
No it doesn't You're a liar...Army Rangers Sniper.
@godbluffvdogg
Depends on the range and the compass direction. Extreme long range shots have had to account for it, such as the record-setting shots by a Canadian sniper in 2017. The distance was 3,540 meters, well beyond typical sniper shots.
@@THall-vi8cp Bullshit...A sniper or long shot shooter only adjust for WINDAGE ...NOT THE "SPINNING OF THE EARTH" It's so asinine that people still try that lie... You can't bullshit me kid...I'm a Veteran.
@@THall-vi8cpThis is an old hearsay that keeps coming up, between all the variables such as distance, wind, air density, humidity and elevation it can not be proven that Coriolis force has any effect. None of the really long range targeting systems such as canon fire or missile targeting systems count for Coriolis force and they travels hundreds of miles !
That is so cool man!!! Wow! Great video. Thank you.
Glad you liked it!
With that coat and the comment "look at these beautiful cycloids" I felt like I was under a bridge about to purchase some counterfeit cycloids...
Wow. It's like an optical illusion.
Ok i didnt expect my mind to be blown by this but it was
That was very informative, thank you. What I'd like to see is having the marble swinging back and forth but the marble is attached, by way of a string, to the rotating camera. Would the effect be the same? Since now the marble is not experiencing friction from the plate. I would venture to guess that the marble will swing in a straight line regardless of the position of the rotating camera.
Yes, the effect is the same. That apparatus is called the Foucault pendulum. I have a separate video about the Foucault pendulum.
Pretty awesome!
Thank you! Cheers!
I understand this a lot better now! Thanks for your video!
Glad to hear that!
Svaka Vam čast na prezentaciji, naravno,video ne bi bio kompletan bez tog detektivskog mantila! Sve najbolje.
Hvala puno. Veliki pozdrav.
Wow! Excelent demonstration. So now I have to think, what if marble left ink trails? Would they be curly, straight across, or what? Friction will keep them from going straight across. They would have to be curly. Not from the marble moving in curly direction. Its not. But from table spinning in circles.
Yes, your interpretation is correct.
"Psst! Hey kid! You wanna buy some science?"
Resident Evil 4 merchant.
I had a great physics teacher in High School, but he didn't have access to video cameras back in the late 70s. I like to thing that Mr. Hall at Queen Anne High School in Seattle would have done something similar if he had this set up available.
Excellent video. One question. Will this still work if I am not wearing a trench coat?
That's a good question! It works, but the effect is directly proportional to the visual appearance of the coast.
@@DjordjeRomanic thank you sir. Great video.
You know you've got some swag when whole comment section praises your clothing choise in a video that has nothing to do with it.
haha thank you. :D
@@DjordjeRomanic i said nothing but truth ;) really cool outfit, that suit you well
You are my spirit animal
Amazing! Thank you!
Glad you liked it!
I knew the Coriolis effect existed, but I didn't quite understand how it worked. This instantly brought understanding to me. Thank you for sharing this.
I am happy to hear that. You are welcome.
thank you inspector gadget
This is a great explanation and visualization.
Thanks. I am glad you liked it.
Very interesting demo. So, were they expecting rain in the lab that day?
Yes, it's an atmospheric science laboratory. :)
This is a demonstration of a really cool trench coat.
Well thank you. Much obliged.
I would like to have one like it, they are very vesratile and sharp looking.@@DjordjeRomanic
Thanks
Welcome.
Yes it is fictitious well done
The inspector gadget of physics
And of the Atmospheric Sciences.
Brilliant demo..
The effect exits, however minimal it may be & has the potential for deviation of high speed projectiles fired at extended ranges.
Rail guns say different.
Excellent video but the glowing eyes at the end scared me lol 😄
😈
Thank you John Constantine
haha You are welcome!
This whole video is wild
Flower of life.
Yes I wanted to see the trails on the plate with marbles. Maybe coat the marbles in something that marks the plate
so it is in short watching your friend act when you both are high vs watching your friend act when only he is high 😂
Dude's literally the real life Niko Bēllic !
👁️👃👁️🙏
Thank you for such an excellent video demonstration :-)
Glad it was helpful!
So, which one are we actually seeing ? Is the marble actually making coriolis movements or straight ? I mean it can’t be both.
- I take it the point is it depends on your frame of reference ?
- Even though it ‘appears’ the marble is making parabolic movements it’s not really ?
- If we were spinning at the same rate with the table, we would only see the Marne moving in a straight line back and forth yes ?
- Luke others have suggested, what would an ink trail look like ? Parabolic from friction on the marble ?
Why then are cyclones/hurricanes subject to Coriolis effect when the earth and atmosphere aren’t touching ? Is it because there’s still friction of the atmospheric air relative to the earth ?
Yes, it depends on the reference frame.
Who could be better at explaining than Lieutenant Colombo? ❤
What’s weird to think about is every experiment done on earth is already subject to the Coriolis effect, including this one
You are correct. However, if one calculates the Rossby number for this experiment with respect to Earth's rotation and one will notice that the Earth-related Coriolis effect is negligible. But yes, you are 100% right that there is some component of Earth's Coriolis force being exerted on this moving marble.
We’re all brainwashed as children to believe earth is spinning as a globe. At a 24,900 mile circumference at the equator it would be moving at over 1000 miles per hour to go around once every 24 hours. But not once have the forces he so magnificently demonstrated been shown on earth. We experience no motion. That’s why the real documents for long range munitions have written in them that they are designed as if on a flat and non rotating earth. If they designed them for a rotating earth they would miss their targets. This is why airplanes coming in for a landing never have to adjust for a runway moving out from below them (unless they are landing in a heavy cross wind).
I was like...sure Inspector Gadget, show me a thing or too...in the end I was just 86'd by Get Smart!
Why is the center of the plate off the axis of rotation by a significant distance?
It's not by a significant distance. It doesn't affect the experiment though.
Dean: "The hell does this have to do with anything Cas?"