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谁能看见紫外光+绿光？
source link: https://tech.sina.com.cn/d/a/2020-06-27/doc-iirczymk9150104.shtml
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来源：原理在人类的视网膜附近有三种视锥细胞，分别是红色视锥、绿色视锥和蓝色视锥，它们对不同波长的光有不同的敏感度。不过，一些动物可以看到更宽的光谱，比如鸟类就拥有除上述三种视锥细胞之外的第四种视锥，这种额外的视锥细胞不仅将鸟类的可见颜色范围
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