Coriolis Effect | National Geographic
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- Опубликовано: 17 сен 2024
- Tim finds out what happens when you throw a ball while spinning around on a merry-go-round.
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Coriolis Effect | National Geographic
• Coriolis Effect | Nati...
National Geographic
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I am watching this for my exam 😂really helpful...........
Same
Same
How did you do
I don't have hear about it.
Same
0:51 how did they fit all that ego on that merry-go-round.
Reuben Obery 😂😂😂😂
They all think they're going to catch it. They sure did pick a cliche group of Americans.
I think it was an intent at humour.
He was being sarcastic
It was a joke
Cpt. MacMillan: Remember what I've taught you. Keep in mind the variable humidity and wind speed along the bullet's flight path. At this distance you'll also have to take the Coriolis effect into account.
I came from there lol
This is the first time I heard the coriolis effect and I thought it's the blurred vision after using the sniper scope.
This is the main reason why I wanted know about the coriolis effect.. I want to thank call of duty modern warfare series for introducing me to all this amazing scientific knowledge.. The series was the reason why I get to know better and more about nuclear bombs- more on radiation insights and how it was made from atom diffusion, and how it is impossible for anyone to survive a nuclear blast.. I was a dumb kid.. But this game made me a better person than I was before.. Seriously.
There is no coriolis effect in ballistics! Unless of course you are shooting over the north or south pole. The earth is spinning over 1000 mph at the equator and the same reason helicopters cant fly 1000 mph just by lifting off applies to the bullet as well. Because the bullet was traveling at the same 1000mph as the ground and the atmosphere when it was fired it maintains its same inertial force, unrestricted. Any shooter adjusting for the rotation of the earth, only hits his target by pure luck and correction of miscalculation.
Same 😂✋
2:21 2:54 my guess is he mispronounced it both times and they had to try and subtly cut it out.
LMAO
lmao nice catch
As if its cut out lol
I think I'm finally understanding the clitoris effect
LOL
seriously...
spelled it wrong lol
Baylie Imler wooosh
😂😂😂😂😂🤣🤣🤣🤣🤣🤣🤣
Ahh yes, the "Core-lois" effect. Very good.
Thank you. I thought I was stroking out when he said it. 😅
This is the best illustration of the coriolis effect that I’ve seen. Well done!
I'm not so sure. He keeps saying it's an optical illusion, and he's right, because the ball isn't actually deflecting, it's going in a straight line. The Coriolis Effect is supposed to be a real thing with actual deflection and actual effects, such as explaining the difference spin in weather patterns between the hemispheres (but not explain toilets lol, that's different). In this experiment, there's no spin, it's just an optical illusion like he says.
@@grawss It’s not an optical illusion from the perspective of those on the merry-go-round.
And WE are in the earth, therefore it is NOT an optical illusion.
@@skipperry63 Yes it is. They see it as curving, but it's actually going in a straight line. Anyway, I went and looked it up from a few other sources to check, and the Coriolis Effect is described as the reason cyclones form clockwise or CCW depending on the hemisphere (seems like BS because toilets do the same without any "deflection"). The video here seems to be describing the Coriolis FORCE, which doesn't look so much like a force as a method to calculate moving reference frames using Newtonian physics or some such.
Personally I think they misapply this in science, since the weather is controlled by the magnetic field of the Earth and its interaction with the Sun. The weather isn't dragged along; it's part of the planet and moves along with it in much the same way the arms of galaxies don't lag behind and wind up the whole galaxy into a ball or the component parts of an atom don't do the same.
Anyway I digress. It's definitely an optical illusion. It looks like it's curving, but it isn't. The people are.
@@grawss It is not a real force, though. It is a fictitious force, because the observers on the carousel "invent" it to explain the curved trajectory that they observe. For a stationary observer not bound to the rotational reference frame, the ball continues its motion in a straight line.
A shot from the narrator's angle would have made it clear. If there was a stationary camera outside the carousel right behind the girl when she threw it, we would have seen the ball travel in a straight line.
@@khankbar At one point I mentioned the Coriolis effect in context with atmospheric deflection between the hemispheres. From the papers I've read, they don't seem to think it's fictitious. I'm not really sure if people consider the "effect" different from the "force" but there seems to be some amount of confusion.
Im watching this for online school
Yeah
facts this is hot trash
same lmaoo
Yess😂😂
Im online schooling for watching this
Nice! Except could've been much beeter had they put another camera stationary wrt ground to show the straight path.
The what?! the Corey-Lewis effect?
Hahahahah i heard the same :D
The what?! Cold-Ellis effect?
the coriolis effect
It sounded like they dropped the audio when he said it. Is Coriolis a curse in England? Like "bloody" or "shag"?
It's coriolis force/effect
What this video fails to explain is that the example of the coriolis effect it is showing only applies if the object passes over the center point of the spinning circle or the ball remains in the air long enough for its inertial force to carry it beyond the circle and/or the intended target to change its direction of travel . She could have thrown the ball to the persons next to her without the ball being affected. (Other than air resistance)
Yes next to her but one side faster and another side slower.
No, the path will appear curved in their frame of reference regardless of the direction it's launched in. If she threw it to her right, when she's gone half way around it will now be on her left and from her point of view it will have curved around behind her. If they are rotating anticlockwise, an object moving in a straight line will always appear to be curving clockwise, regardless of the direction. For the person opposite her to catch it, her best chance is to throw it towards the person on her left, because that's where the person opposite will be a moment later when the ball arrives there, depending on the speed of course.
The key point is that the trajectory of the ball APPEARS TO THE OBSERVER IN THE ROTATING FRAME to be curving. The rotating frame creates a fictitious acceleration that appears to throw the ball off from its straight line trajectory.
The acceleration can be due to the the kinetic energy the ball possesses as it rotates while in the grip of the lady
@@lawoemawuenagayheart5916 no. There is no acceleration.
I honestly believe that i heard he said 'Carl Lewis' effect😂
The CornHolio effect.
Such an immaculate explanation for a thing which atleast i thought complicated, thanku
The girl is correct, if she was rotating fast enough or the ball thrown slow enough she would be able to catch it.
No, she won't, because the velocity of the girl along the tangential direction of the point from where she threw the ball becomes lesser and lesser whereas the velocity of ball in the same direction remains the same all the time, so she won't be able to catch up with it.
True
Mohit Raj Sah - Could you explain that in simpler terms please?
Siberius Wolf Basically she would travel more and longer along the radius of the merry-go-around than the ball which is traveling in a straight line.
@@mohit4715 Incorrect. Her tangential velocity has nothing to do with the velocity of the ball. Let's say the merry-go-round has a radius of 1m, and she throws the ball at 1m/s. Thus it takes 2s for the ball to reach the other side, because the diameter is 2m. NOW, if the merry-go-round is spinning at .25 revolutions per second, then in those 2s it takes the ball to cross, the ring has rotated .5 revolutions or 180 degrees. Therefore the girl rotates to the opposite side of the disk, catching the ball that she herself threw from the other side.
1:29 if you want to save minute and a half of your life
😂😂😂
Thank you very much for that explanation. but there is a tangential velocity for the ball right? won't that have any play in this?
You are right. Its not optical illusion
Right....Now to apply this to ocean and wind currents...YAY
Thank you National Geographic!
I believe this is a little misleading, or at least incomplete. Coriolis effect implies an inertial force, thus acceleration, in the non-intertial frame of reference (i.e. the merry-go-round). This force is not just an optical illusion, but rather a cinematic effect due to the velocity of the ball in a rotating frame of reference. When the ball is thrown it has a tangential velocity that is directly proportional to the radius (i.e. distance from the center of the merry-go-round). While the ball crosses the plane of the merry-go-round, any point of the plane has a tangential velocity which is, again, directly proportional to the radius, and thus, progressively decreases the closer the ball gets to the center. The greater tangential velocity of the ball, with respect to the points of the plane closer to the center of rotation, produces the fictitious acceleration to the right (since the merry-go-round is spinning counterclockwise, if it were rotating clockwise it would be to the left). It is the same force, for instance, that causes trade-winds.
Yes. The guy's explanation is just wrong.
Thank you❤️
From Sri Lanka 🇱🇰😍
1:44 if you observe slowly the ball actually landed just opposite to the girl
Geography homework when the teacher refuses to teach be like
COREYLEWIS
the girl's guess that she would catch it was also on the right track. she just thought the thing would spin fast enough for her go around and catch it
came here from modern warfare 😂
the sniper mission
Abassi Ahmed noob its called One Shot, One Kill
@@koonstaas_ and fvck u too
fantastic and simple demonstration!
பயனுள்ள தகவல் நன்றி
2:21 - why does his voice sound weird when he says 'Coriolis effect'
2:54 - it happens again
Jebediah Stanton because he's saying "Core-olis" effect. Maybe that's because of his dialect, but it is annoying. Just say the word the way it's spelled, Jeez. (says a self-entitled southerner)
Because its coreowlis effect, dude!
It's pronounced the /ˌkôrēˈōləs iˌfekt/
This is weird and funny at the same time hahaahha
Very creative illustration of the Coriolis effect.
Thank your sir..Well explained
It's simple: the ball was moving in the projected direction, but the catcher changed his location.
This means the air on our earth's surface is moving in its projected direction. Rather, the location changes due to the earth's continuous rotation. And in the end, someone else gets the air.
Wow! Elaborated so simply
This isn't a good way to demonstrate the Coriolis effect. It would confuse people who didn't already understand it. The curve of the ball is caused by both the rotation of the observers and the ball moving in a tangent off the circle it was following. The tangential movement doesn't happen on the surface of the earth because of gravity. With the Coriolis effect, the curve is produced by the difference in speed at different distances from the axis of rotation. Rotating observers are a bad analogy to the different speeds at different latitudes. And it invites viewers to confuse the rotation of the earth with the different speeds of the start and end points. Explaining things well is a skill; understanding something yourself doesn't give you that skill. Understanding the subject is necessary but not sufficient to explain it well.
Jaja k creisi
Geography student here?
Mee
This video is not accurate. In the example they use, only the reference frame is changing because they're on a spinning object. They did not make any mention of the fact that differences in angular momentum are what actually cause this apparent force, not just a change in the reference frame. The angular momentum is equal in everyone's seat on a flat disc like they are, but on a sphere like the Earth it changes depending on latitude. When you move North or South, angular momentum is conserved, & because the Earth rotates at slower & slower speeds the farther away you move from the Equator THAT'S what causes the deflection we see as to the right in the Northern hemisphere & to the left in the Southern hemisphere.
Griffin Hardy which is still called the Coriolis effect genius
@hardygriff It's not the angular momentum it's the linear velocity at different points on the earth that is the cause of the Coriolis effect. The angular velocity is the same for all of the people on the merry go round no matter where they sit on it. Same for the earth.
ive always wondered how the aglio olio effect came about
That was very informative!!! Im amazed!!! 😭
ever since people used projectiles in war from arrows to cannon balls they had to account for the spinning of the earth around it's axis if they wanted to hit the intended target. realistically as the girl said, if the merry go round had turned fast enough she would have been able to catch the ball she had thrown herself.
the best explanation i saw and was the first video crazy explanation
英語わからんけど内容が分かりやすいのマジですごい
2:31 the animation is wrong for this experiment. since you are moving, you won't throw the ball straight if front of you, the direction you throw the ball is also combined with the direction in which you are moving. when you play basket you pass the ball straight to the guy who is running in the same direction for him to catch it. so it's not just the carry-holes effect at play.
No its right, when she had the ball she pointed it in a straight direction but after the ball leaves the hand, its all inertia of the ball the keeps it moving but since the frame of reference (camera) is rotating it looks like its not straight. The coriolis force is real only if the thower & the reciever are rotating on the same plane, if you are looking from a different frame of reference which is not a part of the rotating plane, then you'll see that the object moves in a straight line
@@davel7037 I didn't say it wasn't a straight line, I pointed to the fact that the ball should, from a different point of reference, move in a straight line, but slightly to the right when she releases the ball since at any point she is moving to the right.
Imagine the platform abruptly stopped exactly after the ball release. If they were moving fast enough, the person to the right would still catch the ball.
The animation would have been right if she threw the ball while standing and than the platform started spinning abruptly.
Well, technically anyone of the catchers or the thrower could have been in line to catch the ball depending on the speed at which the merry-go-round was spinning. I believe the people would be thrown off instantly if the person across from the thrower would have theoretically been able to catch it. :D It all depends on the speed of the rotation and time it takes the ball to reach a catcher going less than 6ft. The observed path caused the ball to make a 90-degree turn right from the thrower. Twice as fast of a spin you would have produced a 180-degree observed path back to the thrower. Four times as fast of a spin would give the ball an observed 360-degree curve and reach the original target who would have been thrown off instantly at around 67 or 135 miles per hour (assuming the merry-go-round is 6ft in diameter and rotated 360 degrees in between 1 and 0.5 seconds depending on the time it would take the ball to reach its destination) to his death position in .25 seconds falling one foot to the ground at a tangent distance of 24 to 50 meters away. : D
i think you are talking about azimuthal force. When either direction or magnitude of angular velocity changes.
@Py16777216 This is not a demonstration of Coriolis.
If she is watching from a non inertial frame of reference then shouldn't there also be a centrifugal force in radially outward direction ? And the net force would be resultant of centrifugal force and coriolis force ?
I thought as the ball was released it has the sideways velocity as due to interia but she threw that ball in the straight line and due to its interia of going to the left it went that way.
The ball didn't travel to the left! The ball moved in a straight line while the people moved underneath it, making it "appear" to travel to the left .It's why he said it's an "optical illusion".
this is sooooo awsome
From an observer standing on the ground and looking a the merry-go-round: the ball goes on a straight line. From someone standing on it: the ball trajectory looks to be curved. OK but Coriolis is not just an "optical illusion". Would you say that the centrifugal force that pushes you against the door when the car makes a sharp turn is also an optical illusion? Yet the Coriolis force is also an inertial force, comparable to the centrifugal force.
rubbish
@@spookyactiontv3822 Could you elaborate a bit further?
@@pierricdelaborie2838 that is exactly what Coriolis is, and yes it is an optical illusion, fictitious force, pseudo force, not actual force. The force that pushes you against a car door while making a sharp turn is Centripetal force.
@@spookyactiontv3822 The centripetal force is the opposite reaction to the centrifugal force (Newton's third law of motion), so it is the force applied by the car door to your body and prevents you from going out. The inertial force that pushes you out against the door is the centrifugal force. Anyway my point is that the term 'optical illusion' is misleading and not used in physics. In a non inertial reference frame, Coriolis appears in the Newton's second law as a force. Although it is an inertial (or fictitious if you prefer) force, you still have to take it into account as a force and not an 'optical illusion'.
Excellent I needed this for an exam
Beautiful explanation
what a video! excellent demonstration! just love it!😀
Excellent explanation!
Did the machines running the matrix delete the guys "R" when he said Coriolis?! O_O
Amazing demo
It really wasnt
this video is super informative!!
This is great
Let's freak the girl totally out and spin the merry-go-round fast enough where she catches her own throw.
Explained very well, thank you!!
I know right. I'm in 8th grade and my Geography teacher didn't explain it to us well. This did.
Do people find this hard to understand?! Its one of the most simple things I've ever watched, it needed no explanation.
@Antara Mandal That doesn't apply here but keep trying.
woooow
TOO EASY TO UNDERSTANT
lol ik
isnt it just a net force that makes it go in diagonal direction? it had velocity vector perpendicular to the circle and a velocity vector of the throw
This demonstration does not describe the coriolis effect which is dependent on linear velocity at the pole in the middle, the velocity at the edge and the direction of travel of the ball. The demonstration is just an optical illusion as the ball actually travels in a straight line. In coriolis the ball would actually curve to the right in the northern hemisphere and to the left in the southern hemisphere depending on whether you are traveling north to south or south to north. Traveling in either direction along the same latitude in either hemisphere displays no coriolis effect.
great explanation, it totally makes sense
Excellent
Watched it for my science. Helped a lot
Super sir thank u for explaining in a experimental way
wow .
It is awsomerighr.
Makes sense.
Look at a wall-clock and imagine you are located at 12;00. You throw a ball down to 6;00 (see it drop down that line). Only that it takes the ball 15 min. to reach down, AND the clock is also spinning CW by a quarter every 15 min. When the ball reaches all the way down you'll have 03;00 in that bottom position.
But i still have a doubt the explanation that u can only throw the ball straight is ok if the ball had no momentum but when the thrower threw the ball it had momentum
You are correct the ball does go straight for a stationary observer. With the distance and direction the ball is thrown the Coriolis effect is negligible. What you see with the merry go round is an optical illusion.
It hurts so much when he keeps calling it an optical illusion
fun really enjoyed!!!!
But she's still right.. Isn't she ? If it rotated fast enough, she'd be the one to catch it !
thanks a lot
Just Imagine if the girl didn't throw that ball, she might be able to prove her point that she catched that like a flash.
Explained it so beautifully thank u love from nepal❤
thanks
The ball didn't curve at all it landed in the same location as where it would have went if you they weren't spinning. They all are right, depending on the rotational speed of the table; Each one of them would be able to catch the ball. The ball ended up in the same location it would have if thrown. Just put your finger on the screen of where it would go before she threw it.
amazing video
Finally a full clip
Thx it will help me at my exams
well, does it mean that the angular velocity of reference frame of the girl is not transferred to that ball, that's why it goes straight w.r.t ground ?
Amazing
awesome
The ball is going straight, but the people are the ones that are moving. If they were pushed clockwise, the ball would go to the person on the left.
+Brown ElCamino the roundabout is moving lol
+amanda fryett its like saying im moving while sat on me seat on a train or any vehicle rofl
+Brown ElCamino The ball is moving at the same speed as they're moving. It has more to do with the difference in speed of the merry go round as the ball approaches the center. The ball is going as fast as the outside of the circle. However it is traveling across the circle. Which is changing in speed.
Very funny experiment useful as well😂👌
Very informative. Thanks NatGeo 🤍❤️
Show us how Coriolis works on the oceans.
this is cool! WOW FANSCINATED
more of these!
There is a void in the explanation. The ball in fact is slightly deflected because of the initial linear speed generated by the thrower speed which is tangential to the circle. That is to say, to the right since they are rotating counterclockwise.
Fighter pilots had to master this effect to hit the target. Some of the best deflection shooters had learned this hunting rabbits and so on.
Nice Video
Using this for my test lol
thank u
I learned this in science class with Ms. Forgnoni at Atholton High School
When its inertial you can see it going straight but when its not inertial u can see the spin.
What about the angular momentum of the ball ? Is it a factor ?
So, with ongoing talk about rebooting Babylon 5, i really want them to have a scene showing a ballgame inside a rotating space station.
Wah
So a good video ❤️