Watch The Different Color Changes In This Young Girl’s Hair

It seems not long ago that everyone was arguing over the color of that now-infamous dress. Turns out, the same debate can be had over this girl’s hair color. The real question is, what’s happening in these colorful optical illusions?

The short answer is metamerism, a phenomenon that occurs when the same object takes on different colors depending on the light source. It can also described as seeing two items as matching in color in one light, but determining their colors are different when viewed in another light.

The scientific reason for these color variations occurs because of the structure of the human eye. With only three types of color receptors, all colors must be reduced to three values.


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