Line Reversal Pyrometer

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Line Reversal Pyrometer

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A thermometer for high-temperature gases in which the temperature of a calibrated radiator is adjusted until the spectral areal radiant intensity of its continuum radiation is equal to the intensity of radiation from some suitable characteristic spectral line emitted by the gas. </dd>
The comparison is made at the wavelength of the spectral line. Seeding is often used to create such a line. </dd>

References

This article is based on NASA's Dictionary of Technical Terms for Aerospace Use