众所诸知,地球在不停地绕地轴转动,因此地球并不是一个严格遵守牛顿第二定律的惯性系,而是一个非惯性系统。所以我们可以不观察天体的运动便能在实验室里通过做力学实验来发现地球的自转现象,并计算出地球自转的角速度ω。傅科于1851年在巴黎做了这一著名的实验,实验装置实际上与实验室里常用单摆相似,只是为了让摆能较长时间地摆动,他把摆长做成67米,在摆线下端系上28千 As we all know, the earth is constantly turning around the axis, so the earth is not an inertial system strictly following Newton’s second law, but a non-inertial system. So we can observe the rotation of the earth by doing mechanical experiments in the laboratory without observing the motion of the celestial bodies, and calculate the angular velocity ω of the earth’s rotation. Foucault made this famous experiment in Paris in 1851. The experimental device was actually similar to the one used in the laboratory. It was just for the pendulum to swing for a long time. He made the swing length 67 meters. At the end of the line is tied to 28 thousand