0:51 how did they fit all that ego on that merry-go-round.

I am watching this for my exam 😂really helpful...........

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.

2:21 2:54 my guess is he mispronounced it both times and they had to try and subtly cut it out.

Im watching this for online school

I think I'm finally understanding the clitoris effect

This is the best illustration of the coriolis effect that I’ve seen. Well done!

Ahh yes, the "Core-lois" effect. Very good.

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.

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)

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?

I honestly believe that i heard he said 'Carl Lewis' effect😂

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.

The girl is correct, if she was rotating fast enough or the ball thrown slow enough she would be able to catch it.

Such an immaculate explanation for a thing which atleast i thought complicated, thanku

The CornHolio effect.

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

1:29 if you want to save minute and a half of your life

Geography student here?

1:44 if you observe slowly the ball actually landed just opposite to the girl

came here from modern warfare 😂

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?

Thank you National Geographic!

Thank you❤️ From Sri Lanka 🇱🇰😍

It hurts so much when he keeps calling it an optical illusion

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.

Right....Now to apply this to ocean and wind currents...YAY

2:21 - why does his voice sound weird when he says 'Coriolis effect' 2:54 - it happens again

fantastic and simple demonstration!

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.

Geography homework when the teacher refuses to teach be like COREYLEWIS

Very creative illustration of the Coriolis effect.

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.

Do people find this hard to understand?! Its one of the most simple things I've ever watched, it needed no explanation.

பயனுள்ள தகவல் நன்றி

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.

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.

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.

Thank your sir..Well explained

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 ?

Wow! Elaborated so simply

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.

ive always wondered how the aglio olio effect came about

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.

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

This is weird and funny at the same time hahaahha

That was very informative!!! Im amazed!!! 😭

When its inertial you can see it going straight but when its not inertial u can see the spin.

英語わからんけど内容が分かりやすいのマジですごい

the best explanation i saw and was the first video crazy explanation

Let's freak the girl totally out and spin the merry-go-round fast enough where she catches her own throw.

If you'll move clockwise, the ball will bend to your left

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.

Excellent I needed this for an exam

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.

Beautiful explanation

whos here for science class lmaooo

what a video! excellent demonstration! just love it!😀

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.

Explained very well, thank you!!

Did the machines running the matrix delete the guys "R" when he said Coriolis?! O_O

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.

Watched it for my science. Helped a lot

Excellent explanation!

great explanation, it totally makes sense

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.

this video is super informative!!

Finally a full clip

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

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 demo

this is sooooo awsome

Wow that actually made sense

But she's still right.. Isn't she ? If it rotated fast enough, she'd be the one to catch it !

Super sir thank u for explaining in a experimental way

Show us how Coriolis works on the oceans.

Explained it so beautifully thank u love from nepal❤

So, with ongoing talk about rebooting Babylon 5, i really want them to have a scene showing a ballgame inside a rotating space station.

This is great

Watching this for pilot training

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

Excellent

thanks

Briefly explained. So this effect is also in play when the rugby players throw the ball to their teammates while running forward

thanks a lot

Using this for my test lol

Thx it will help me at my exams

woooow TOO EASY TO UNDERSTANT

obviously the ball was a paid actor

thats how bullet bend

Teacher just sended me that

amazing video

fun really enjoyed!!!!

This is just simple logic , if you Merry go round like that, and throw an object in the air the object will bend to the nearest place. Depend on the where you rotate it clockwise or counterclockwise.

Some important aspects of the coriolis effect aren't explained here and this example is a bit misleading. One can misunderstand this explanation by thinking the ball is moving independently from the merry-go-round. It should be emphasized that the ball has an angular velocity and it's moving toward the center of the circle where the linear velocity at those points are different. A person can have the incorrection notion that the ball being in the air is simply having the merry-go-round move under it.

Nice Video

more of these!

Amazing

thank u