why is wet hair darker than dry hair?

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why is wet hair darker than dry hair?

2007-11-03 00:14:51 · 3 answers · asked by z A h J 1 in Science & Mathematics ➔ Physics

3 answers

The same reason that fabrics, paper, etc. darken while wet, and soap lather is white. The refractive index N of water is closer to that of hair than is the N of air. When light enters dry hair or airy lather, more of it is returned by internal reflection in individual parts. When wet (or when the lather changes to a liquid), internal reflection decreases and the light is conducted further into the bulk of the material.

2007-11-03 02:14:08 · answer #1 · answered by kirchwey 7 · 0⤊ 0⤋

kasi.. nde xa whitier kaya darker!!! haha...

2007-11-03 20:55:15 · answer #2 · answered by ren... 1 · 0⤊ 0⤋

HMMM... good question... I have no idea.
Haha

2007-11-03 00:17:41 · answer #3 · answered by Anonymous · 1⤊ 1⤋