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物理学是以实验为基础的科学,物理实验在中学物理教学中具有十分重要意义。通过实验来引出概念和规律,使学生理解物理概念和规律的建立与实验的关系。在物理教学中,老师演示实验的绝大多数都能正确地反映客观规律,但有时也会出现实验的假象。如果不加注意,就会给学生形成错误概念,以假乱真,鱼目混珠,其后果可想而知。下面结合中学物理教学实际略举数例。例1.在高中物理甲种本第三册“电磁感应”一章的练习二中,有这样一道习题:"在图1中,A和B都是很轻的铝环,环A是闭合的,环
Physics is an experiment-based science, and physics experiments are of great significance in middle school physics teaching. Experiments are used to elicit concepts and laws so that students understand the relationship between the establishment of physical concepts and laws and experiments. In physics teaching, the vast majority of teachers demonstrating experiments correctly reflect the objective laws, but sometimes the illusions of experimentation appear. If you do not pay attention, you will give students the wrong concept to make people feel confused, and the consequences can be imagined. Here are some examples of the physical education in secondary schools. Example 1. In the second exercise of the high school physics category “Induction of electromagnetic induction” in the third volume, there is such an exercise: “In Figure 1, A and B are very light aluminum rings, ring A Is closed, ring