給我一個合適的槓桿和立足點，我可以翹起地球 【阿基米德】_風聞

HE FAMOUSLY SAID THAT HE COULD TOPPLE THE EARTH IF GIVEN AN APT PLACE TO STAND ON

A leveris a machine consisting of a rigid rod pivoted at a fixed hinge, or fulcrum. In his book On the Equilibrium of Planes, Archimedes proved the law of the lever using geometric reasoning. It shows that if the distance a from the fulcrum to where the input force is applied (point A) is greater than the distance b from the fulcrum to where the output force is applied (point B), then the lever amplifies the input force. Archimedes understanding of his principle of mechanical advantage caused him to remark, ‘Give me a place to stand, and I shall move the Earth with it’. Hypothetically speaking, the distance required to do this might be exemplified in astronomical terms as the approximate distance to the Circinus galaxy, about 9 million light years away

他説過一句名言，如果給他一個合適的立足點，他可以顛覆地球

槓桿是由一根在固定鉸鏈或支點處轉動的剛性杆組成的機器。在他的《平面平衡》一書中，阿基米德用幾何推理證明了槓桿定律。它表明，如果從支點到施加輸入力的地方(點A)的距離A大於從支點到施加輸出力的地方(點B)的距離B，那麼槓桿放大了輸入力。阿基米德對他的機械效益原理的理解使他説:“給我一個支點，我可以用它來移動地球”。假設來説，這樣做所需的距離可以用天文學術語來舉例説明，大約是到Circinus星系的距離，大約900萬光年。

A cartoon of Archimedes moving the earth with the aid of a lever