Larry Woolf
General Atomics
www.ga.com
www.sci-ed-ga.org
-----Original Message-----
From: Ludwik Kowalski
Sent: Wednesday, January 24, 2007 2:52 PM
To: Forum for Physics Educators
Subject: Re: [Phys-l] IR thermometer buy
The only things that do not change with r are the location of the
maximum and ratios of partial intensities at two different wavelengths.
My guess is that T is determined from a ratio of two partial
intensities. Some kind of a filter, and two detectors, would make this
possible, at least in principle.