Thank you, Marv.
On Aug 26, 2004, at 10:03 AM, Radio WC6W wrote:
On Thu, 26 Aug 2004 08:26:34 -0700 R.Measures <r@somis.org> writes:
Hi Rich,
<snip>
IR doesn't radiate "through" standard glass.
IR from sunlight undoubtedly gets through double-pane metal-film
coated thermal windows. Through standard glass, even more IR gets
through.
The flavor of IR we're discussing is that measured by the optical
thermometers.
Those typically have a Germanium window on the sensor which cuts off
on
the shortwave end around 2 microns. Glass cuts off in the same region
(2-4 microns) on the long end. So, the IR thermometers can not "see"
through glass.
73 & Good morning,
Marv WC6W
*
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