当光线从空气中倾斜进入其他介质时，折射角小于入射角。当光线从其他介质斜入射到空气中时，折射角大于入射角。当入射光入射到垂直界面时，折射角等于入射角，等于0。
when I write a number to binary file, it 开发者_JS百科won\'t display. but in case of a character, it does. why? how would you check to see if the file containing character is binary?It has all to do w
开发者_高级运维 光的全反射现象就是海市蜃楼现象，光从光密介质射向光疏介质时，当入射角超过某一角度C（临界角）时，折射光完全消失，只剩下反射光线的现象
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