20210108 巴黎先贤祠内的傅科摆 必应壁纸

巴黎先贤祠 巴黎先贤祠内的傅科摆 今天的壁纸为巴黎先贤祠内的傅科摆，1851年，当法国物理学家傅科在巴黎进行他的摆锤实验时，他成为那个时代第一个怀疑并证明地球绕轴旋转的科学家。他在170年前的1851年1月初进行了第一次实验，在他家的地窖里有一个相对较小的原型。仅仅一个月后，傅科用一个62磅重的球形砝码连接在一根220英尺长的电线上，这根电线悬挂在巴黎的一座纪念碑Panthéon的穹顶上，进行了他最著名的钟摆演示。当钟摆在一个固定的平面上，在它下面的一个罗盘状的沙盘上来回摆动时，旁观者看着这个圆圈旋转。这反过来又证明了地球本身在它下面旋转，而且延伸开来，所有观看的人也在旋转，在环绕地球的蓝色大理石表面旋转轴心。全部这些年后，傅科钟摆的复制品仍然可以在世界各地的博物馆里找到，继续展示这个优雅的科学证据。这里看到的钟摆，完全是原作的复制品，自1995年以来一直在巴黎展出。

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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