巴黎先賢祠 巴黎先賢祠內(nèi)的傅科擺 今天的壁紙為巴黎先賢祠內(nèi)的傅科擺，1851年，當法國物理學家傅科在巴黎進行他的擺錘實驗時，他成為那個時代第一個懷疑并證明地球繞軸旋轉的科學家。他在170年前的1851年1月初進行了第一次實驗，在他家的地窖里有一個相對較小的原型。僅僅一個月后，傅科用一個62磅重的球形砝碼連接在一根220英尺長的電線上，這根電線懸掛在巴黎的一座紀念碑Panthéon的穹頂上，進行了他最著名的鐘擺演示。當鐘擺在一個固定的平面上，在它下面的一個羅盤狀的沙盤上來回擺動時，旁觀者看著這個圓圈旋轉。這反過來又證明了地球本身在它下面旋轉，而且延伸開來，所有觀看的人也在旋轉，在環(huán)繞地球的藍色大理石表面旋轉軸心。全部這些年后，傅科鐘擺的復制品仍然可以在世界各地的博物館里找到，繼續(xù)展示這個優(yōu)雅的科學證據(jù)。這里看到的鐘擺，完全是原作的復制品，自1995年以來一直在巴黎展出。

原文:

In 1851, when French physicist Léon Foucault performed his pendulum experiment in Paris, he became the first to prove what many scientists of his day already suspected—that the Earth spins on an axis. He conducted his first experiments 170 years ago, in early January 1851, with a relatively small prototype in the cellar of his home. Just a month later, Foucault performed his most famous pendulum demonstration, using a 62-pound spherical weight attached to a 220-foot wire, which was hung from the dome of the Panthéon, a Parisian monument. As the pendulum swung back and forth in a fixed plane over a compass-like circle of sand below it, onlookers watched as the circle rotated. This in turn demonstrated that the Earth itself was rotating underneath it, and by extension, everyone watching was rotating as well, spinning on the surface of the great blue marble around its axis.All these years later, replicas of Foucault's pendulum can still be found in museums around the world, continuing to demonstrate this elegant scientific proof. The pendulum seen here, an exact copy of the original, has been on display in Paris since 1995.

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