物理学是一门以实验为主的自然科学,它的概念的建立和规律的获取都是以实验为基础的,或者是在实验的基础上进行科学抽象得来的,包括人们提出的各种假说和设想都需要通过实验来加以验证。而在课堂教学中,由于时间和空间的限制,很多实验都无法进行,或由于设备和外界因素的影 Physics is an experiment-based natural science. Its concepts and rules are acquired on the basis of experiments or scientific abstractions on the basis of experiments, including various kinds of people's suggestions Hypotheses and ideas need to be verified experimentally. In classroom teaching, due to time and space constraints, many experiments can not be carried out, or because of the impact of equipment and external factors