Finding the surface absorptance of a material if I'm not given the radiant emittance

  • #1
j1230
1
0
TL;DR Summary
surface absorption
how can I go about finding the surface absorptance of a material if I'm not given the radiant emittance of the non- black body?
 

Answers and Replies

  • #2
Baluncore
Science Advisor
12,367
6,437
Illuminate the surface with a square wave modulated or a pulsed source.
Then synchronously detect the reflected energy as an AC signal.
The DC output will be due to emittance of the body.
 

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