Each sphere is moving in a straight line, but the final motion is circular

Mar 25, 2026 6:22 AM

bohund

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18312

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558

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12

1 day ago | Likes 12 Dislikes 0

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The motion isn't circular. The APPARENT motion is circular. It's an optical illusion.

1 day ago | Likes 1 Dislikes 0

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I made one of these with a hand crank and sliding blocks in school like 20 years ago.

1 day ago | Likes 3 Dislikes 0

They are a witch! Burn them.

1 day ago | Likes 1 Dislikes 0

All these squares make a circle. All these squares make a circle. ALL THESE SQUARES MAKE A CIRCLE

1 day ago | Likes 5 Dislikes 0

BITCH DON'T TELL ME WHAT TO DO.

1 day ago | Likes 4 Dislikes 0

I'll tell you where they're not...

1 day ago | Likes 4 Dislikes 0

That's a fancy trammel of Archimedes, also called an ellipsograph, that uses magnets instead of a hand crank.

1 day ago | Likes 136 Dislikes 0

I was wondering how they got the timing so perfect, by hand.

1 day ago | Likes 42 Dislikes 0

and that continues at a fixed rate when tilted front to back.

1 day ago | Likes 16 Dislikes 0

If you watch the 8th ball getting placed you can see the magnet catch it.

1 day ago | Likes 13 Dislikes 0

Mirrors.

1 day ago | Likes 5 Dislikes 2

A little smoke

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1 day ago | Likes 49 Dislikes 2

I didn't study math in particular, but in general I've always enjoyed learning practical uses for subjects more than straight theory. I wanna know how to use it.

1 day ago | Likes 1 Dislikes 0

Most math emerges from reality... but sometimes there are a lot of steps in between

1 day ago | Likes 8 Dislikes 1

My square root of a negative number would like to chat

1 day ago | Likes 5 Dislikes 0

The number “i” arises in nature all the time. It encodes rotations and oscillations and is a critical component to our most successful model of the natural world, quantum mechanics. It is unfortunate to have the name “imaginary number”. A more accurate name would be a "perpendicular number".

1 day ago | Likes 3 Dislikes 0

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There's definitely a magnet behind it...

1 day ago | Likes 23 Dislikes 0

You can see on one of the ones as he puts it down it hits the magnet and shakes a lil into place

1 day ago | Likes 1 Dislikes 0

don't get it wet... /s

1 day ago | Likes 3 Dislikes 0

nah, balls just tend to infinitely slide once set in motion

1 day ago | Likes 26 Dislikes 2

I mean, yes? If we're looking at the universe, I'm sure there's more planets, moons and the like in orbit around a star than there is "man made balls on planet earth". :)

1 day ago | Likes 3 Dislikes 2

infinitely != for a very long time

1 day ago | Likes 5 Dislikes 1

I think it's more likely an AI video, especially when they lift it at the end and hold it at different angles without noticeably changing the motion of the balls.

1 day ago | Likes 13 Dislikes 10

The ball that moves most closely along the x-axis or side to side, has a small 'glitch' when placed.

1 day ago | Likes 2 Dislikes 2

There are magnets running back and forth inside the device to control the motion of the metal balls.

It's not AI, and you can order one of these online if you want.

1 day ago | Likes 17 Dislikes 0

It's sad that nowadays one has to suspect AI for every pic and video, isn't it? But in this case one can see some of the balls move strangely when they are being put in, so I assume it's an actual thing with a magnet.

1 day ago | Likes 5 Dislikes 0

Fuckin magnets; how do they work?

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FFS not everything weird is AI.

1 day ago | Likes 3 Dislikes 0

That's just what an AI would say

1 day ago | Likes 3 Dislikes 0

You're right, I was wrong

1 day ago | Likes 3 Dislikes 0

but I sure am tired of having to squint at every fucking video before I can determine if it was, in fact, produced by the giant theft engine that only makes dross

1 day ago | Likes 5 Dislikes 0