众所周知,物理学是一门实验科学,物理概念、规律和理论都是以实验为基础的,所以实验对学好物理知识显得十分重要。而在中学阶段,由于学生的知识水平、动手能力和学校实验条件的限制,绝大部分实验都是演示实验。 As we all know, physics is an experimental science, physical concepts, laws and theories are all based on experiments, so experiments are very important for learning physical knowledge. In the middle school stage, due to students’ knowledge level, practical ability and school experiment conditions, most experiments are demonstration experiments.