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Electromagnetic radiation that is outside the visible spectrum is not visible. For that reason, it has

never been perceived by the human eye. Since "color" is the name of how the radiation is perceived

by the human eye, light that has never been perceived has never been named or described.

Except by the one in a million human beings who is able to perceive light that is not in the visible

spectrum. But even he, while perceiving it, never bothered to name it, because he knew full well

that nobody else could see it, so why bother. In that respect, his situation was not much different

from that of the Rabbi who sneaked out the back door for a quick nine during Musaf on Yom Kippur

and was cursed with a hole-in-one off the first tee. Why was it a curse ? Who could he tell about it ??

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12y ago
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Wiki User

15y ago

There are a number of bands (not colours) of a higher or lower frequency than visible light, the closest being infrared and ultraviolet.

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Wiki User

10y ago

Everything outside what "we" call viable light.

That includes everything referred to as infrared or ultraviolet.

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Wiki User

11y ago

It's more than just two colors, but mayber you were thinking of infrared and ultra-violet?

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Q: What 2 colors can't the human eyes see in the spectrum?
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