【硬核科普】被严重低估的折射现象！为什么光会发生折射？为什么著名的惠更斯原理和费马原理也解释不了折射现象？9分钟带你看折射的本质。（上）
Synopsis
0:00 开头0:46 第一种说法2:01 第二种说法2:28 第三种说法3:07 第四种说法3:59 铺垫5:28 正确说法8:19 总结这期视频内容采用的 ...
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