10 ridiculously satisfying, perfectly looped mechanical GIFs to entrance you
10 ridiculously satisfying, perfectly looped mechanical GIFs to entrance you | 22 Words
The Tusi-couple is a mathematical device in which a small circle rotates inside a larger circle twice the diameter of the smaller circle. Rotations of the circles cause a point on the circumference of the smaller circle to oscillate back and forth in linear motion along a diameter of the larger circle. The couple was first proposed by the 13th-century Persian astronomer and mathematician Nasir al-Din al-Tusi in his 1247 Tahrir al-Majisti.
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