(Aug. 15, 2010 7:54 PM)Poisonserpent Wrote: it may sound noobish,but in this video of the bey fray, it looked like some of the beys stopped spinning then started again in the other direction!if u do know how this happened,please explain.
http://www.youtube.com/watch?v=sA3uE5tsVtI
Nyquist's theorem. Basically, your eyes/the camera are not fast enough to catch all of the movement of the Beyblade. When it starts to slow down, your eyes can see "more" of it's rotational frequency and thus it appears to be speeding up. It's like the helicopter blade effect in movies.
EDIT: I think it's Nyquist's theorem, at the least. I just remembered it from memory and linked to the Wikipedia article. I may have gotten the name wrong.
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