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物理学可通过多种研究方法探索、认识物理世界,其中最基本、最有效的方法之一就是转化.例如微小物体的振动,人们的眼睛不能直接看到,怎么才能看到?电流看不到也不能摸,怎样才能知道电流的存在?动
Physics can explore and understand the physical world through a variety of research methods. One of the most basic and effective methods is transformation. For example, the vibration of tiny objects can not be directly seen by the eyes of the people. How can we see the current? Can not touch, how can we know the existence of current?