对于高中物理课本(必修),笔者愚见,以为课文中两处有可以斟酌之处。不揣浅陋,在此提出,求教于专家及诸同仁。 一、关于发生全反射现象的条件 必修本第二册第七章第六节“全反射”中,课文这样论述: “当光线从光密介质射到两种介质的界面上时,如果入射角大于临界角,就会发生全反射现象。” For high school physics textbooks (required), the author was foolhardy to think that there were two places in the text that could be considered. Do not ask for advice. Here, ask for advice from experts and colleagues. First, the conditions for the occurrence of total reflection phenomenon Compulsory Volume II, Chapter 7, Total Reflection, the text says: “When the light from the optical medium to the interface of the two media, if the incident angle Above the critical angle, total reflection occurs.”