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1851年,法国人傅科(J·L·Fouc-ault) 爬上了一座修道院的屋顶,安装了一个摆绳长67米,摆锤(铁制)重28公斤的单摆.当时,傅科用这个硕大的装置直观地显示了地球的自转.后来,人们就管这种摆叫做傅科摆(Foucault Pendulum).一百多年来,傅科摆成了普及天文知识、验证力学原理的一种有用装置.为了普及天文知识,许多国家的天文馆里安装了博科摆.甚至,联合国总部的门也安装了博科
In 1851, the Frenchman J.Fouc-ault climbed the roof of a monastery and installed a pendulum with a length of 67 meters and a pendulum (iron) weighing 28 kilograms. With this huge device, the Earth’s rotation was intuitively shown. Later, people managed to call this Foucault Pendulum. For more than one hundred years, Foucault has become a popularization of astronomical knowledge and the principle of validating mechanics. Kinds of useful devices. To popularize astronomical knowledge, Brocade pendulums were installed in planetariums in many countries. Even the doors of the United Nations headquarters installed Brocade.