Intelligently Designed Flapping Frequencies

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Physicists at Roskilde University in Denmark have shown that a single equation correctly describes the frequency of wing and fin strokes for a wide array of flying and swimming creatures, including birds, insects, bats, and whales.1,2 They used a technique called dimensional analysis to show that if one divides the square root of an animal’s mass by the surface area of the wing or fin, the result is equal to a constant mult… More…

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