The Brachistochrone · Animation of Galileo's Speed Problem
解説
A science animation made with Canvas 2D, approximately 2 minutes 8 seconds, explaining Galileo's 1638 question about the fastest descent: a straight ramp is shortest but not fastest, a circular arc is faster, and the true answer—the cycloid—was found by Bernoulli in 1696. Perfect for math and physics education videos.
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