From:	Jon Szeto <JonSzeto@***.COM>
Subject:	Re: thermographic vision-question
Date:	Tue, 2 Feb 1999 19:41:41 EST

In a message dated 2/2/99 15:18:29 Eastern Standard Time, renouf@********.COM
writes:

> Typically, the infrared band is considered to be more or less in
> the 3 to 20 micron range (i.e. the wavelength of the waves as they
> propagate is 3-20 microns long).

Just a slight correction: the infrared band actually extends from 30 to 0.76
micrometers in wavelength (with 1 micrometer being equal to 1E-6 meter, or
one-millionth of a meter). (This according to US Army Field Manual 3-50.)
Thermographic vision, as described in SR, exists in the far-infrared spectrum
between 14 and 30 micrometers. It's at these wavelengths that the blackbody
radiation at low temperature ranges (0-100 C or thereabouts) are the greatest.
At shorter IR wavelengths (less than 14 micrometers) the amplitude for this
temperature range is too small to be detected.

Other than that you're pretty much spot on.

-- Jon