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Bhāskara's wheel : ウィキペディア英語版 | Bhāskara's wheel
Bhāskara's wheel was invented in 1150 by Bhāskara II, an Indian mathematician, in an attempt to create a perpetual motion machine. The wheel consisted of curved or tilted spokes partially filled with mercury. Once in motion, the mercury would flow from one side of the spoke to another, thus forcing the wheel to continue motion. ==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Bhāskara's wheel」の詳細全文を読む
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