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Old 22-09-2005, 06:00 PM   #62
kagemaru
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Quote:
Originally Posted by jwhtan
err .... must tanning be direct on each part to have effect ??? i've always felt that when u r in the water, the reflections will tan u overall ... well, wat happens is that I swim quite a bit .... and its not my back that's dark only .... my body is also dark ... this is quite different from how we tan when we're out of the water ... when u lie face down, u get ur back burnt and when u lie face up, ur body gets burnt .... the overall tanning when u r in the water is pretty different ... this is of cos due to the reflections in the water and that UV rays penetrate water easily
maybe so...I like the way u put it...

but on a serious note, the UV in water will be refracted in many angles and the best angle we explored is actually cutting in at 45 degrees but the thing about it is possibility of DE...cos the red will tend to flick around trying to avoid the light...

whereas on the 90 degree perpendicular penetration, light hits on one area in the shortest span and gets bounce off fast too...