曾多次探讨过光的折射演示实验的改进,虽然都能在一定程度上较为直观地演示光的折射这一光学现象,但方案都摆脱不了必须在弱光环境下进行这一条件的限制。可是在实际教学中,更多的学校是不具备创设弱光环境的。我在今年的教学中摸索了一套实验方案,可以不受光线强弱的限制,在正 Have repeatedly discussed the improvement of light refraction demonstration experiments, although to a certain extent, more intuitive visual demonstration of optical refraction of this optical phenomenon, but the program can not get rid of the need to be in low light conditions for this restriction. However, in actual teaching, more schools do not have to create a low light environment. I am in this year’s teaching to explore a set of experimental program, you can not be limited by the light intensity,