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0:16
激光在水里看起来会弯曲的原理核心就两个关键点:光的全反射 水流充当天然光纤正常情况纯净静止的水里,激光永远沿直线走,不会自己拐弯。看到弯曲的条件激光射入向下流淌的弧形细水柱时:水的折射率比空气大,激光在水和空气的接触面上,不断发生光的全反射,跑不出水柱外面。直观理解激光被 “锁” 在水流内部,像在弯曲的透明管子里来回反弹前进;水流受重力弯成弧线,激光被水流带着走,肉眼看就像激
2 months ago
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