《全日制十年制学校中学物理教学大纲》(以下简称大纲)指出:“物理是一门实验科学。演示和学生实验在中学物理教学中十分重要。通过演示和学生实验,既能使学生深刻理解物理概念和规律是怎样在实验基础上建立起来的,又能掌握一定的实验技能。”为了让学生认识、观察、研究物理现象;熟悉各种物理仪器和实验装置;学会量度、测定物理量的方法;建立物理量之间的数量 “Full-time ten-year school high school physics teaching syllabus” (hereinafter referred to as the outline) pointed out: “Physics is an experimental science demonstration and student experiments in high school physics teaching is very important.Through demonstration and student experiments, both to enable students to profound Understand how the physical concepts and laws are established on the basis of the experiment, but also master a certain amount of experimental skills. ”To enable students to recognize, observe and study physical phenomena; familiar with various physical instruments and experimental devices; learn to measure physical quantities Method; establishes the quantity between physical quantities