１．模拟物理现象，创造虚拟的物理世界。物理教学的研究对象具有多样性。有的研究对象是不可见的，如电场、磁场；有的则是瞬息万变、不易观察的，如气体分子的运动、微观粒子的行为；有些则是宏观的，如天体的运动过程和规律等。这些课堂演示实验，由于受时间、空间以及实验 1. Simulate physical phenomena to create a virtual physical world. The research object of physics teaching has diversity. Some research objects are invisible, such as electric and magnetic fields; others are fast-changing and difficult to observe, such as the movement of gas molecules and the behavior of microscopic particles; and some are macroscopic, such as the movement processes and laws of celestial bodies. These classroom demonstration experiments are due to time, space, and experimentation