Coriolis Effect - Museo Inti Ñan

[Kinai007]

Btw, Coriolis works only on huge mass (of air for exemple) and without interference, so it's ridiculus

[realisticHomeboy]

@Kinai007 That's completely wrong. The Coriolis force work on any object of any mass. Of course what they do is a scam, but that's because you need to be hundreds of kilometers away from the equator to see a difference. Not just a couple of meters.

If you wanna see the Coriolis force on a small object, make a small pendulum and see how it changes direction. Google "Foucault pendulum" to see about it.

[Kinai007]

@realisticHomeboy @realisticHomeboy YOU are wrong. Foucault pendulum doesn't work neither with small mass. And for water, you can try in your bath, sometimes water spin clockwise and sometimes counter clockwise. For the pendulum, if you can read french : check Wikipedia >> Pendule de Foucault >> Effets parasites

[realisticHomeboy]

@Kinai007 lol, what is wrong with you?

1 - Facaul pendulum works for very small masses. I know for a fact, because I made a project once with a small facault pendulum in the beginning of my physics studies.

2 - You talk about baths have no relevance.

3 - Why would I need to be able to read french?

You seem to have no clue of what you are talking about. You haven't found out how to see wikipedia in english? Not that I need to see anything in wikipedia to know this.

[Kinai007]

@realisticHomeboy What i would say is foucault and coriolis are easily influenced by "parasits". And because of that we can't see the real effect of coriolis with small mass. And of course foucault pendulum works with small mass but it works much better with big mass. I know what i say, and you can disagree. So, I stop the debate and sorry for my bad english. ^^'

[Elsuperdady]

@Kinai007 bullsht.... i was there, coriolis doesn't need huge mass of water

[pacman7000]

cool

[NScott45]

hahaha! It should spin COUNTER clockwise in the NORTHERN hemisphere, if that were the coriolis effect, which obviously isn't

[realisticHomeboy]

@NScott45 Sorry, but you got it mixed up. The experiment is indeed fake, but the direction is correct. It will spin clockwise on the northern hemisphere.

[yory1969]

The GPS in my car was showing the 0'0 on the street some 50 meters away from the line in the museum...

[yory1969]

The GPS in my car wa

[Neutrinoghost]

Bollocks. Why didnt you zoom in on the first video? I couldn't see anything.

[realisticHomeboy]

It is NOT justified by being a demonstration, since they CLEARLY try to make people believe it's real and not just a demonstration. Sure if you ask them directly, they will indirectly admit that it's just a cheat only meant to demonstrate it. However, they clearly present it in a way to make people think it's real. The whole place is a scam. Almost nothing there is original. It's nothing but reconstructions, so what is the point? Tourist trap, nothing else.

[RTRVII]

this is not the coriolis effect. Somehow there is (even in the scientific community) a really big deal of confusion around this subject.

[89premier]

THIS IS DEFFINITELY NOT THE CORIOLIS EFFECT. They are unbelievably naif all those people who support this joke

[89premier]

THIS IS DEFFINITELY NOT THE CORIOLIS EFFECT. They are unbelievably naif all those people who support this joke

[89premier]

THIS IS DEFFINITELY NOT THE CORIOLIS EFFECT. They are unbelievably naif all those people who support this joke

[parasitesarefunny]

The idea that toilets and bathtubs drain differently in the Northern and Southern Hemispheres has been popularized by several TV shows, including The Simpsons and the The X-Files. In addition, several IGNORANT science broadcasts and publications, including at least one college-level physics textbook have also stated this.

* Most toilets flush in only one direction, because the toilet water flows into the bowl at an angle, if the angle was the opposite water would flow in the other direction.

[parasitesarefunny]

100% STUPID

It is a common belief that the direction of rotation of a bathtub or toilet vortex is determined by the hemisphere it happens on. Whereas theoretically Coriolis forces affect the draining flow; however in practice, various stronger factors dominate—such as turbulence, temperature distribution, and wall shape.

[fitzyuc]

I don't think that's the coriolis effect.

[widdalightsout]

It does not work on the small scale, apparently the water is draining clockwise, while my country is located very near to the equator.

[alvadagansta]

true that. Tour guide has a hot body though.

[AlienScientist]

Try stirring the water in one direction and then wait an hour or two until it calms down again. Then drain the water and see which way it spins.

Repeat for the opposite direction.

My hypothesis is that tiny micro-vortices in the water effect the direction of the larger vortex more than any Coriolis effect from the Earth ever could... The tiny vortices in the water are amplified by the draining water flow to produce the large vortex.

Test it out yourself...

[carocrio]

@widdalightsout well u have to be in the line not "very near". how do u think the experiment works in that place? she walks 1m away north and south to prove u that. is not a trick! is a real effect

[astarti85]

Third: In your video, the people wear the same clothes! if we accept the truth of your experiment you should try it in places with big geographic latitude difference, such North and South Pole and not with a 10 step distance, don't ya think!?

Last thing: Nevertheless, it is a nice idea to attract tourists and it is also interesting demonstration to children.

[astarti85]

Secondly, You can observe the effect of Force Coriolis in two common effects : air TURBULENCE and STORMS. Why? Because the physical quantities are escalated. When a centre of low pressure is created, air masses will start moving radiously to the centre . But the Coriolis acceleration causes divergence of the air molecules to the right of their orbit , in Northern hemisphere.That results in a counter-clockwise turbulent movement. In southern hemisphere is clockwise. (source: Psysics AlonsoFinn)

[astarti85]

Well.. First of all : Coriolis acceleration is defined -2wV, where w is the angular velocity and V the velocity of the movement. (These are vectors). Coriolis Force is usually NEGLECTED ! But it has serious effects on ROQUETTE and SATELLITE orbits because of the huge velocity they develop.

[ssvar]

i will agree with subductionzone and horkley. your observations are, in most cases, due to randomness (randon errors), shape of plug hole and INITIAL CONDITIONS. The coriolis effect is negligible in the above case. Even if it has been observed by you in person, Oatsinthe over, it is a random observation. Science can be explained (with reliability) only by repeated, controlled experiments and conclusions based only on the results obtained. Someone subduct this populistic notion of crap science.

[altabeh]

This experiment is not correct ABOUT showing the Coriolis effect. If we toss a ball horizontally 100 m in 4 s in the United States, the Coriolis force applied on the ball will only change the direction of it 1.5 cm from the way it was believed to go. So in a tub with this small size no effect of type of Coriolis one would be observed even if we were seeing a way larger tub than that.

[ssvar]

at 0:33 you see the girl place a leaf on the water when tub is on the equator. the leaf follows a curve that is patently clockwise.

the perturbation given to water by sink shape imperfections and initial angular momentum of the water determine the direction of the vortex, effect of coriolis force is too small to counter the vortex in the time frame of this video.

[oatsintheoven]

ive ben there and seen it you have know idea man

[subductionzone]

Two things are necessary for the Coriolis effect to take place. Since it is dependent on Earth's rotation it needs time, in the short time it takes to drain the water the Earth would not have moved appreciably. Second it takes a difference in latitude, again the difference in latitude from one end of the tub to the other is practically zero. So this carny show is busted on two counts. As some of the other posts have pointed out it is probably due to how they fill it with water.

[horkley1985]

This video is NOT TRUE! First off, when a mass is moving from a high pressure area to a low pressure area in the norther hemisphere it will rotate COUNTER-clockwise, not clockwise (look at a hurricane animation). This is nearly impossible to test on such a small scale. If it were truly the coriolis effect that caused this, there would be only one rotation per day. If you don't believe me, ask any Physics Ph.D.

[JDavidCifuentes]

But, what its true is that in Equator Line the water wont spin neither direction. Thats the only part of the experiment that its true and you should remember from the museum.

[JDavidCifuentes]

It would be impossible to make a real effect in such a short distance, we need to help the force to come by not letting the water to be completely steady otherwise the natural spin of the water would be so weak that wont move the leaves we use to represent the movement. Normally you should do this really far away form the equator and in better conditions.

[JDavidCifuentes]

We just want to show a small representation of the formation of the Coriolis Effect. Thats why when we perform the experiment; we tell most of the people that we are just making an example of what really happens in the Southern Hemisphere as well that in the northern hemisphere. And thats because were are to close, in distance, from the Equator line to the Southern and Northern Hemisphere.

[JDavidCifuentes]

To all of you my Friends, my name is Juan David Cifuentes and Im one of the guides of the Inti Ñan Museum. Please don't get me wrong but some of you are right and some are not. I being working in the Museum for about 1 year and half and let me tell some facts that you should know about the Experiment of the Coriolis Effect. First, is not scientifically proved because were not scientist, and our purpose is to give simple and important information of the middle of the world.

[rodge002]

Actually this experiment can be reproduced. Go to the equator (It will be hard if theres no guide and you do it independently) and see for yourself... :D

[UnderMan1965]

Um, how about doing the experiment 100 times in each location. Waiting to make sure there is no influence on the water. Pour pepper on top. Record your findings. One experiment in each location does not a science experiment make. The experiment MUST be repeatable to gain a real notion if it is proof or not. If the water goes in a direction (or not) other than what was expected, even once, your theory is proven wrong.

[Dellerl]

Everyone who wrote that the video isn't right is an stupid little child who should learn just a little bit more about the planet we are living on.

[mikelangley62]

It's a carnival trick people!! kaptainoakley 'I don't know if spelling is right'has these same videos with that same carny girl. But in one of his videos he shows the scam artist POURING THE WATER. They pour it on the right in the north causing it to spin left. They don't show the south but if you look at the water on the ground you can see it's on the left.

[Lacadef]

If you ignore the fact that the coriolis force isn't determinant factor in this sort of moviment of the wather or that the mass and the velocity of the fluid are to small - there's still the problem of logic: the experiment according to the description, is in one museum so the sink could only move some meters apart and that would't be enougth to change the spin in such drastic way, sorry for any mistake in english force of coriolis: -2 x mass(velocity x angular velocity)

[hosmaylopez]

Coriolis depend on the planet's rotational speed ( angular velocity), and the time it takes for an object or fluid to go down a drain is so small that that the planet has not had a chance to rotate at all based on a fixed refference frame.

[raythetse]

the force would still be there regardless of the time the draining takes place. It doesn't effect the draining because it simply isn't strong enough to overcome more dominant forces.

[Crucidal]

heey,

2real4real. The Coriolis effect isn't a effect if i'm right. It's an explanation of what we see when something moves above a rotating object (to keep it simple xD) Isn't this some other effect that you might have mistaken?

[kategra84]

My apologies , didn't read the description .

[kategra84]

Are you guys realy STUPID ?????

The bounch travels from ecuator to the nord and the south thousands of miles to make this experiment and wear the same ,clothes nothing changed ? This video is fake .

[fatloud]

the corioles effect has nothing to do with this get your facts stright it only effects large bodies of water

[chrille5511]

Is this actually at a museum? do they really need to fool people to make an interesting museum about the equator?

[saricast]

I've been there, seen it, have the video from it too! Regardless of what everyone says, I know it is true.

[lookaduck66]

What a sham, demonstrations on this tiny a magnitude cannot be affected by Coriolis force in any observable manner.

[Crucidal]

Then how could you explain what's shown on the video?

[lookaduck66]

First of all, read the description. Second, If you look at the demonstrator's hands she places each leaf differently depending on location. The path of the leaf mimics the way she places it, regardless of location.

[Crucidal]

ok ok, i missed the library part in his desciption... but I was just curious =)

why is everybody so negative and pissed?

You can't get mad because of a question (normally) can you???

[lookaduck66]

Yeah, idk I guess it's like every topic like this. People always tend to get annoyed when people ask easy questions (no offense). But it's also the way that this video is kind of about a whole conspiracy or w/e.

[levlobotomy]

coriolis effect doesnt deserve either its own name, nor the "effect" description because its just inertia from a certain pov.

[blower05]

But how to explain the 3 comparisons that many people argued that that is not coriolis effect?

[Trekky623]

"an exposure or revelation, often by way of an article or book, which provides shocking or surprising information."

And? So basically he's saying: "Look! It works!"

[Trekky623]

Umm, in the Northern Hemisphere, the Coriolis Effect would cause something to move counterclockwise, not clockwise. Plus, this effect is mostly due to drain design, not the Coriolis Effect.

[fagh8er]

the coriolis effect does not affect which way the water spins...it is only applied to large-scale winds

[magicmaniacs11]

for the coriolis effect to really work, you would need a bigger pan, a smaller hole(for it will take days to show any significant rotation, and you would need to pul ouf the cork from the bottom

[Floyd37]

the pressure gradient force (when you make the surface of the water uneven) either by the shape of the sink, sticking your hand in, or even just moving the tub in the direction you want the water to spin, will over ride any effect from coriolis. The deflection from coriolis is only 0.00001 m at 45 degrees.  That is tiny compared to the pressure gradient force...

[frankcom2937]

this has me stumped on how and why this happens its probably going to get deeply into physics that i wont understand so if u reply please put ur explination into simpler terms

[mexchico17]

Polar bears and penguins have so much to tell us about how their toilet's water spins. I don't know, but in my opinion, that one girl was cute. She can spin me any way she likes.

[eldominicanboy]

yeah lol

[jmc8197]

Think about it. It takes the earth 24 hours to rotate. So in one minute while this xperiment is being performed, thats an angle of 360/(24*60) = 1/4 degree.

[DigiTan000]

There is so much wrong with that statement I don't even know where to begin.

[jmc8197]

DigiTan000, I think it's more probable that u r deluded. My point nicely sums of the fact that the effect is tiny.

[DigiTan000]

Nice effort. But my 9th grade sister would tell you (degrees/time^2) does NOT equal degrees again.

Let's learn a little Unit Cancellation...

1. (360° / 1 day) = (x / 1 minute)

Convert days to minutes...

2. (360° / 1440 minutes) = (x / 1 minute)

Multiply by sides by one minute...

3. (1 minute)*(360° / 1440 minutes) = x

Solve for x...

4. x = 1*360°/1440 -> x = 0.25° rotation

...Of course all that proves is the Earth rotated a quarter of a degree during the taping. :P

[DigiTan000]

SECOND, the effect isn't dependent on the amount of rotation, but the RATE. Its the cross product of x2 the Earth's spin, and the water's velocity relative to the drain. Cross products always point orthogonally to the original vectors. So with Earth spinning on an axis, and water flowing into the drain you see an acceleration along a third NEW vector field. Causing the spin.

[DigiTan000]

Only AFTER taking that cross product, calculating the force of water molecules and then comparing that to other forces only the water (thermal energy, wind, sink structure) do you disprove the Coriolis effect. In my case, I calculated a force 5 order lower than the thermal energy water would have at room temperate (6x10^-21 Joules rounding up). THAT's how you prove the effect is small. Not bad for being "deluded."

[jmc8197]

Just go outside, get a basin of water with a hole in the middle and observe which way the water goes down. Now rotate it 1/4 degree per minute in either direction and see which cancels/adds to the effect. There is no need to bring in advanced maths to demonstrate that the effect is small. Just common sense.

[jmc8197]

Digitan, the CORIOLIS FORCE is dependent upon the water's velocity relative to the Earth and the angular velocity of the Earth. The effect we're looking at is the rotation of the water, and so this will also be dependent upon time. The smaller the time, the less the effect. Me pointing out that the Earth will have rotated 1/4 degree, highlights the time scale.

[jmc8197]

DigiTan, u have taken 7 lines to show what took me 1. Yes, the Earth rotated 1/4 degree during the time of this experment, yet here they are trying to show us that the leaves in the water are rotating a few 360 degrees Lol!

[stevekny]

As 2real4real suggests, the draining of the water is too short lived and too near the equator for any deflection to be observed. She induced the spin in the wrong direction anyway! IF coriolis was to impact the water, it would cause an anti-clockwise spin in the northern hemisphere.

The coriolis effect is caused by Earth's rotation and acts perpendicular to Earth's spin axis. Coriolis exists at the equator, but it has only a vertical component, and none in the plane of Earth's surface.

[librastars]

Good stuff! Mythbusters unite!

[brownmd01]

Just read your description. If it is an illusion then surely we should be able to replicate the 'rotations' anywhere on the planet - say in your back garden. Might have a go this Easter weekend if the weather is good...If I suceed I'll let you know :0)

[ABCDEFGHIJ3]

That's pretty cool. My dad told me to read the Wiki article about the Coriolis Effect, so I searched it in Youtube. 5 stars.

[brownmd01]

Hi there, yes this is a similar demostration to the wone I filmed in Uganda. The question is - is it real or is it a clever illusion. I recommend you type in coriolis effect into wikepedia. They have some interesting things to say about the reality of this...