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大家都知道,在电磁波谱中,可见光只是其中的一小部分,其频率大约在3.8×10~(14)～7.5×10~(14) Hz之间.通常人们把其分成红、橙、黄、绿、蓝、靛、紫七种单色光,对正常人来说,人眼有很强的辨色能力,可以分辨出七种不同频率光线的颜色.这主要是因为在人的大脑中含有视锥细胞,它接受强光和色光的刺激,主要在白天起作用.
We all know that in the electromagnetic spectrum, visible light is only a small part of the frequency of about 3.8 × 10 ~ (14) ~ 7.5 × 10 ~ (14) Hz between the usually divided into red, orange, yellow , Green, blue, indigo, purple seven kinds of monochromatic light, for normal people, the human eye has a strong ability to identify the color, you can distinguish the color of seven different frequencies of light.This is mainly because in the human brain Contains cones, which are stimulated by intense light and shade, acting primarily during the day.