1.演示光的折射在一个方型的玻璃水槽里,装约10厘米深的肥皂水,在水面上点燃几根蚊香,盖上一块玻璃(不要密闭,否则蚊香会熄灭),待烟幕弥漫水面上的空间后,在玻璃的上方用激光笔(可用电教的激光教鞭或玩具激光笔)向下斜照,利用烟幕和肥皂水作为媒质演示光的折射.如图1.2.演示全反射用圆底烧瓶装一些肥皂水,在水面上点燃几根蚊香,待烟幕弥漫水面 1. Demonstration of light refraction In a square glass sink, put about 10cm deep soapy water, light a few mosquito coils on the surface of water, cover with a piece of glass (don’t close, or the mosquito coils will go out) until the smoke curtain fills the water surface. After the space above, use a laser pointer (available as an audio-visual laser pointer or toy laser pointer) to illuminate the lens above the glass, using the smoke screen and soapy water as a medium to demonstrate the refraction of light. Figure 1.2. Demonstration of the total reflection with a round bottom The flask is filled with some soapy water, lighting a few mosquito coils on the water until the smoke fills the surface