实验是物理学的基础,是检验物理理论的标准。在学生建立完整的物理概念和导出正确物理规律的课堂教学中,实验是最活跃最具生命力的部分。演示实验是指为配合教学内容由教师操作示范的实验,是教师施展教学艺术的独特方法,它能化抽象为具体、化枯燥为生动,能引导学生观察,并进行思考,配合讲授使学生认识 The experiment is the basis of physics and is the standard for testing physical theory. In the classroom teaching where students establish a complete physical concept and derive the correct physical laws, the experiment is the most active and most vital part. Demonstration experiment refers to the experiment that is carried out by the teacher to demonstrate the teaching content. It is a unique method for the teacher to display the art of teaching. It can be abstracted as concrete, boring as vivid, it can guide students to observe, and reflect on it.