据说伽利略在意大利比萨城的大教堂里仔细观察悬挂在一根长的绳子上的灯来回地摆动,发现不论灯摆动的幅度如何变化,但摆动一次所需的时间都相同——摆的等时性,从而为惠更斯等人发明摆钟奠定了理论基础:牛顿看见成熟 It is said that Galileo carefully observed the lights hanging from a long rope in the cathedral of Pisa, Italy, swinging back and forth. He found that regardless of the amplitude of the lamp’s swing, the time it takes to swing it is the same. Sex, thus laying the theoretical foundation for Huygens and others to invent the pendulum clock: Newton sees maturity