Thread: Opaque Water
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Unread 04-25-2003, 08:21 AM   #7
Alchemy
Cooling Savant
 
Join Date: Oct 2002
Location: Boston
Posts: 238
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Quote:
Originally posted by JSimmons
I may have to switch to visible light - it's not the preferred method, but it would result in a lot less in terms of electronics.
But "a lot less" what?

Quote:
I don't know what spectrum of IR I'm after, but the one that generates the least amount of heat is preferred. How many spectrums are there?
The entire range of IR, from near IR to far IR, goes from a wavelength of 1 micron to 1 mm. Roughly, about 400 THz to 300 GHz.

Not sure if that helps you, since I have no idea what you're intending to do.

Quote:
Either way, I still need water that light is either diffused in, or where light is almost completely blocked.
That has everything to do with how intense the incoming IR that you want to block is.

Quote:
Maybe food coloring?
All organic materials will absorb a great deal of energy at a few narrow bandwidths of IR, which works great for organic spectroscopy. Not so great for absorbing a wide range of the IR spectrum. Nor can I conceive of any reason for someone to want a fluid to absorb energy from an IR source completely, or any means in which that can be done.

Alchemy
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