转换法,是指在保证效果相同的前提下,将一些寻常看不见、摸不着的物理现象,不易观察的物理过程或不易直接测量的物理量转换成另一种具有可见性或可测性的形式呈现出来。而这种形式与原来的量之间有对应的或同向或反向变化的关系,这是一种将陌生而复杂问题转换成熟悉而简单的问题的方法,是将现象、过程直观化或将待测物理量进行简单的间接测量。 Conversion method refers to the same guarantee effect under the premise of some invisible, inadvertently physical phenomena, not easy to observe the physical process or physical measurement is not easy to directly convert another form of visibility or testability Show it. And this form and the original amount of the corresponding or co-or reverse the relationship between the change, which is a strange and complex problem into a familiar and simple way, is to visualize the phenomenon, the process or The measured physical quantities for a simple indirect measurement.