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Except that "g" varies over the planet, depending on latitude and elevation.

@@karhukivi less than 1% variations make no differrence in that case I would guess

@@maxinfly It's a fair result for a simple experiment. Measuring the angle to the Pole star with a simple clinometer would be comparable in accuracy.

You are referring to the Allais effect. After many years the effect has not been consistently reproducible and has been very inconsistent if reported at all.

It doesn't, it will eventually come to a stop. The permanent display ones will often have a magnet based system to maintain the oscillation.

"you are told it's precession is caused be the rotation of earth " FFS Rodney, you again!?? You form the 3D analysis of what a pendulum swinging in a "fixed" plane would look like going around on a rotating body, do the math of how that would be predicted and then test for it. That is EXACTLY what the Foucault's pendulum is about! The precession varies as a function of latitude. You are too dim to understand that so do yourself a favour and stop commenting to profess your dimwittedness.

Dumber than a lamppost. Thanks for the giggles.

It doesn't, it comes to a stop.

Perhaps you could take a physics class?

@@stuartgray5877 Well, what would a physics teacher say or demonstrate as an answer?

@@PhuketWord A physics teacher would explain how an aircraft still has the momentum of the rotating earth even after it lifts off the ground. Learn about the law of conservation of momentum. If a person on a Train JUMPS, is he slammed against the rear bulkhead of the train car? OR does he just keep moving with the momentum he had before he jumped?

@@stuartgray5877 Why talk about being inside a train? That's just the same as the earth being stationary. An aircraft is totally free of the earth beneath it, just like the pendulum.

@@PhuketWord The analogy is sound. When an aircraft or a helicopter "Left off" from the surface of the earth, they have the same velocity as the surface of the earth (locally). When a helicopter lifts off at the equator 1 meter from the ground, it doesn't start flying away at 1000 MPH, and it SHOULDNT just like a person jumping on a train does not fly against the rea bulkhead. He is traveling with the same velocity as the train so when he is not touching it he and the train are still following the same trajectory. When a plane lifts off from the surface of the earth it is still traveling with the same velocity as that patch of earth it took off from, PLUS enough relative air velocity to have some lift.

dude, just do the experiment at home just as in above video and you will see the rotation and can calculate the latitude. Easy. But you choose to be manipulated into religious cult of flat earth I guess?

Except you just saw a video of people making the exact type of pendulum you called out. What's your problem, son? I see you ran away already - which is poor form even for you flatters. If you're man enough to come back, perhaps you can be the very first flatter to explain your retarded FE claim that people can magically see thousands of miles further just by traveling to a different location on the planet. But you won't - because you're just another cowardly FE troll. You see how easy I made it for you to claim that I'm mean and you won't chat with me because I offend you?

Ian - They are NOT fake. The principle that makes the Foucault's pendulum move is the same principle that Gyrocompasses use to find true north. We also measure earth rotation and curvature tens of thousands of times a day using fiber-optic gyros. Its a sphere. Get over it.

If Earth was stationary flat plane the pendulum would never rotate. But it does. And you can calculate latitude with the formula that relies on spherical Earth. You can literally do the experiment at home, just a massive ball and a decently long wire. Why don't you do it and see for yourself? Why do you choose to live in a lie, being manipulated by flat earth religious cult full of fanatics?

No, not sentient, in motion in the same heading it was with respect to the sun. That's all. If you don't understand the physics, then instead of crying about it man up and get a college degree in physics or engineering. We educated people laugh like crazy at you keyboard flatter warriors - who can't "do" so they need to denigrate. The pendulum would does rotate at all - if positioned exactly on the equator. You claim parlor tricks but how come not a single one of you flatters hasn't done exactly as you say - create a pendulum that doesn't move as predicted by us intelligent folk? I'll tell you why - because you're all lazy and deep down you probably don't even know how to do it. Not to mention also knowing deep down the you won't get the results as expect. If you agree that the pendulum's plane of oscillation rotates, then what is causing it? Why don't you "man" up details on an exact experiment? Oh, that's right - flatters don't do science and wouldn't know the first thing about running an experiment.

Потому что он всегда показывает нужную широту

Because of mass and starting angle. If you claim it would stop perhaps you could show us your calculations that predicts this.

Prove It. Bet you think you are smart.

Sarcasm much?

Mo r on.

@@C_Becker 💉💉🛸🐑🖕

@@chenzog6657 That shows your intellect quite Impressive.

Oh boy.

ok. And? Right. I get it. Is there an alter to you that we mere humans can go and kneel before, oh amazing one? LOL. FFS

Come on, we have all the evidence we need...

For flatters there is no data they will ever accept. Period.

@@kitcanyon658agree. And if they acknowlegde, they’ll never admit it.

@Zagresky99 ???? No! Why?

I've looked into dozens of pendulums with different properties and made some very interesting discoveries. It has a brass surface with an iron core tending towards the magnetic meridian, also a small electromagnetic ferromagnet which occasionally gives a push to make the pendulum swing indefinitely, a so-called Charron ring to eliminate the non-uniform variances in the plane of oscillation and last but not least, no one has considered that in physics a ball tends most of all to produce a circular motion and the weight of the ball makes a difference too. Its is important to also note the strong electromagnetic field of the earth. Et voila, a pendulum seemingly swinging with the rotation of the earth, in a closed frame. And why do people think the earth rotates? cause the pendulum is seemingly swinging with the rotation of the earth! It is always said that the earth would rotate below the pendulum, most people dont even question it, but it could just as well be, that it is the pendulum swinging above the earth. There is no logical point in preferring one conclusion to the other, thats called deception. Did you ever see a crane starting to swing on its own and not able to stop? or did you ever see a plane or a helicopter that had to take coriolis force into account? I did not. If that simple fact doesnt apply to big things, why should it apply to a little pendulum? Another vital point is the Allais effect, that states that during solar eclipses, the sun's emitted electromagnetism creates noticeable disturbances in the vibrational plane. Furthermore, without Charronring, you couldn't just use what's not permanent in favor of, or against, a given sentence, because then you put the cart before the horse and violate honest investigative laws. It will not start to swing on its own and will stop eventually, cause we stand still. I would ask that you set up a handful of Foucault pendulums, preferably on a smaller scale than the Pantheon, without a Charron ring but otherwise with exactly the same specifications, in the exact same place and then realize, since you will get many different and inconsistent results, the pendulum does not work. The plane of vibration is not stable without a Charron ring and the ring is a crafted mechanism to make it appear as if it vibrates with the rotation of the earth in the first place. The ball now provides the circular movement, because that is a physical law. The longer a pendulum is, the longer it can swing without an electromagnetic drive, but after that it's over! Thats why Leon Foucault chose the Pantheon with a 67 M long thread. He was a member of the Hermetic Secret Society of the Rosicrucians, and therefore a Liar and a Thief, cause he was not the first discoverer of the fact that the plane of oscillation of the free pendulum is invariable; but that the honor of discovery is due to Poinsinet de Sivry, who in 1782, stated, in a note to his translation of Pliny, that a mariners compass might be constructed without a magnet, by making a pendulum and setting it in motion in a given direction; because, provided the motion were continually kept up, the pendulum would continue to oscillate in the same direction, no matter by how many points, or how often the ship might happen to change its course. It is pointless to further discuss whether the pendulum works or not, as it is a magicians trick. Here's something else to think about: Another obvious proof is rather more simple and that is time zones and magnetic declination, there are in fact 19 time zones in the north of the equator and 32 south of the equator. Which makes no sense at all on a globe divided into 24 longitudinal sections.

Yeah man pendulums dont prove earth rotation at all.

@@johnpurefeeling6258 "I've looked into dozens of pendulums with different properties " Bullshit!!! You can't even explain how precession is a function of latitude and has been observed for over a century all over the globe. You never built one. You copied (plagiarized) some other moron's text. LOSER!!!

Why would it?

@@kitcanyon658 because he physically is moving it lmfao it didnt just start moving on its own cause the earth is spinning 😂

@@Zagresky "it didnt just start moving on its own cause the earth is spinning " So you utterly don't understand what's going on. Unbelievable.

@@Zagresky NO ONE said that such has to begin "moving on its own". Your statement shows an erroneous understand of this. The spin of the earth DOES NOT push the pendulum. A more base idea is one of Newton's Laws of motion An object in motion will stay in motion unless acted upon by an outside force. So the pendulum is given a motion... RELATIVE to the earth around it. As the earth then rotates beneath it, the pendulum remains doing what it was doing when its motion began. The "frictionless" fulcrum at the top does not affect its motion. With enough mass, surrounding air currents are negligible as well. However, air friction will slow it as it progresses. You can't eliminate that entirely. If this was set up in a very large vacuum chamber, such at at JPL in California, you could get a pendulum that would continue swinging for a LONG time. Most public displays of such will include a booster at the top to counteract the friction of the air.

​@@sissyfus6181dude yall mfs are lost 😂

they're here Look in the comments. Try sorting for newest first and then look...

Then where's your accurate map

@@mactallica9293 where’s yours? Hahaha

@@photosphotos the globe model. Where everything fits. Do you think we travel on luck? How do you think we navigate to every country with exact accuracy?

@@mactallica9293 the countries are not measurably proportionate to what we can measure in reality, that globe on your desk is fictional toy, grow up.

@@photosphotos "what we can measure in reality," We got GNSS. We got WGS84. You got nothing. Stay deluded.