【教材分析】光的干涉、衍射现象为光的波动说提供了坚实的实验基础,使人们对光的波动性有了正确的认识。那么光又是什么波呢?本节延续前面的探究,从光的偏振现象指出光是一种横波。本节教材从生活中的立体电影引入,认识光的偏振现象,理解光的偏振,又以偏振在生活生产中的应用结束。 【Textbook Analysis】 Light interference, diffraction phenomena for the light fluctuations that provide a solid experimental basis, so that people have the correct understanding of the light of the volatility. So what is the wave of light? This section continues the previous inquiry, pointing out that light is a transverse wave from the phenomenon of polarization of light. This textbook introduces from the three-dimensional movie in life, understand the polarization phenomenon of light, understand the polarization of light, and finish the application of polarization in the production of life.