On Oct 21, 2010, at 8:04 PM, Harold Hallikainen wrote:

> does anyone know of an IR meter that will measure uW/cm^2?

At what wavelength or range of wavelengths?  Measuring the brightness =20
of the visible spectrum is comparatively easy because the visible =20
spectrum is pretty narrow.  "IR" has a very broad definition, and most =20
detectors are only good for relatively narrow pieces of it...

BillW

--=20
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