Abstract

Testing conditions are described under which an optical pyrometer offers the best means of temperature measurement even though many difficulties are encountered in the use of the pyrometer. A method is described which, by means of certain approximations, permits temperature measurements, corrections for extraneous light, and measurements of spectral emissivity to be made with a minimum of instrumentation. Controlled experiments have shown that the results obtained provide adequate accuracy for a variety of test requirements.

© 1964 Optical Society of America

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