Re: Infrared & Water

["Rolland Elliott" <rolland_elliott@xxxxxxxxxxx>]

"Your test with a camcorder and a glass of water is
nowhere near sensitive enough to demonstrate that water does not absorb 
infrared as another poster has said."

Ouch! Dear Kieth, Stan, and other water lovers,

Obviously, you all missed the point of the test. It was in direct response 
to the incorrect assumption that veins are dark due solely to their water 
content.  Since my glass of water is a few hundred times thicker than the 
water collum in a typical human vein it was more than adequate, I also 
backed up this test with a Medical Reference book on IR photography. Before 
you jump up and down you should do some testing of your own and read the 
posts more throughly.  I still stand by my statement that in general water 
does not absorb IR to any significant extent compared to visual light. 
Glasses of water record clear on IR film, small pools of water are 
transparent, etc. This is based on my experiences not some physic's text 
book.  If you're 30 meters beneath the sea that's another story, but none of 
you are, you'are sitting in a chair, on your butt, in front of a computer 
talking about theoretical IR photographic situations, that you've never had 
any hands on experience with. If you don't like my test maybe you should do 
your own test and post the results to the list. If you are going to talk the 
talk, walk the walk, go out and take some IR underwater photographs 
otherwise your glorious theory is just a big waste. Peace Rolland

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