A radiation thermometer is a radiometer calibrated
Chapter 12, Problem 12.81(choose chapter or problem)
A radiation thermometer is a radiometer calibrated toindicate the temperature of a blackbody. A steel billethaving a diffuse, gray surface of emissivity 0.8 isheated in a furnace whose walls are at 1500 K. Esti-mate the temperature of the billet when the radiationthermometer viewing the billet through a small hole inthe furnace indicates 1160 K.
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