Unbelievable Spinning Disk
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2. banzemanga commented 13 years ago
Someone got to explain that to me.
At first i thought the disk's spinning increased because the disk and the magnets were magnets with the same polarity. But at the end, it showed that the disk stop spinning touching the surface meaning that they are not magnets of the same polarity. Therefore, my hypothesis is incorrect.
At first i thought the disk's spinning increased because the disk and the magnets were magnets with the same polarity. But at the end, it showed that the disk stop spinning touching the surface meaning that they are not magnets of the same polarity. Therefore, my hypothesis is incorrect.
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4. Jahoo commented 13 years ago
Rotating magnet in the plate, same concept that you use in chemistry when you need to keep a mixture in motion.
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5. BreakIsBetter commented 13 years ago
There's no magnetism at work here. It's just a finely machined metal disc on a slightly concave mirror. Nothing but gravity and the momentum imparted initially to the disc. There are no (or very little) imperfections between the edge of the disc and the surface that would normally act as an energy sink, so you get a nice, long spin with an amazing increase in frequency towards the end.
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8. modder8her commented 13 years ago
Great new token for inception?
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11. orion commented 13 years ago
As #5 said, no magnetism. Every coin does this, only it stops sooner. The rotation is not speeding up. At the end, the actual rotation speed is almost zero. Only the wobble frequency is increasing because when the angle decreases, the axis of rotation and the axis of wobble (precession) are almost parallel and fast opposite rotations about these two axes cancel out into slow actual rotation of the disk.
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12. wingchunguy commented 13 years ago
love the ending, like im traveling in space!
ZWISH!
ZWISH!
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13. schlafanzyk commented 13 years ago
It's the same thing that happens when you spin a coin on a glass/mirror surface, just slower due to the larger mass and size of the disk.
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16. snotraddict commented 13 years ago
Would like to see in slo mo
+8 1. Matteo commented 13 years ago