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Temperature Measurement by Use of Variations of the Planck Equation

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Abstract

A temperature-measurement technique is described that compares measurements of the radiated power of a source with its radiated photon flux. The ratio of such measurements is shown to be a direct function of temperature of a graybody source. For nongraybody sources, the technique yields Kelvin temperatures that are the equivalent of the best-fit graybody.

© 1970 Optical Society of America

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