１　摩擦起电人教版初中物理第二册Ｐ４４图４－１，带电体吸引轻小物体实验，是学习电学观察的第一个演示实验。用丝绸跟玻璃棒摩擦，毛皮跟橡胶棒摩擦带电，实验很难成功，原因是天气潮湿，丝绸和毛皮不干燥。用烘干设备，对实验器材进行干燥处理的方法，虽然效果显著些，但 1 Friction Electrification PEP Junior Physics Book 2 P44 Figure 4-1. The electrified body attracts small and light objects. It is the first demonstration experiment to learn electric observation. Friction between silk and glass rods and friction between the fur and the rubber rods was very difficult for the experiment because the weather was moist and the silk and fur were not dry. The method of drying the experimental equipment with drying equipment, although the effect is significant,