当你乘上火车通过一片原野时,可曾观察到过这样一个奇妙的现象:整个大地都在不停地旋转之中。人们要问,大地是静止的,而火车是直线前进,为什么坐在火车上的人们观察到的大地都是在不停地旋转着呢?下面就谈谈它的物理成因。大家都知道,运动是绝对的,而静止则是相对的。判定一物体是否在运动,必须选择一个我们认为不动的物体作为参照物。例如坐在车厢内的一旅客,相对于火 When you take a train through a field, you have observed such a wonderful phenomenon: the entire earth is constantly rotating. People want to ask, the earth is still, and the train is going straight. Why is the earth observed by people on the train spinning nonstop? Let's talk about its physical causes. We all know that exercise is absolute, while rest is relative. To determine whether an object is moving, you must choose an object that we think is immobile as a reference. For example, a passenger sitting inside the car, as opposed to the fire