Abstract

Measurements have been made of the absorptance and thermal emittance of gold, copper, silver, and nickel, in the temperature range from 200°K to 400°K, under conditions simulating outer space. Over this temperature range the rate of change of temperature, as a function of σT⁴, is not linear in either the heating cycle or the cooling cycle. The experimental data were fitted to a cubic equation by a least-squares technique. The standard heat balance equation was then used to calculate absorptance, emittance, and their ratios.

© 1964 Optical Society of America

Spectral Emittance of Refractory Materials

Henry H. Blau and John R. Jasperse
Appl. Opt. 3(2) 281-285 (1964)

Method of Measuring Target Temperature in a Solar Furnace

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Appl. Opt. 3(12) 1397-1400 (1964)

High-temperature emissivities of copper, aluminum, and silver

K. G. Ramanathan and S. H. Yen
J. Opt. Soc. Am. 67(1) 32-38 (1977)

High-Temperature Spectral Emissivities of H₂O–CO₂ Mixtures in the 2.7-μ Region

C. C. Ferriso and C. B. Ludwig
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Temperature Measurements with an Optical Pyrometer under Adverse Conditions

Fred W. Paul
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