NASA NTRS · 19710000130
Active cavity radiometer, type III - An automatic, absolute standard, highly accurate detector
Abstract
Instrument of simple construction operates without vacuum enclosure over wide pressure range and temperatures from 218 to 398 deg K and defines absolute radiometric scale to within less than 0.5 mW/sq cm. It has potential application to meteorology and climatology and operates on electrical substitution calorimeter principle.
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Willson, R. C.. 1971-05-01. Active cavity radiometer, type III - An automatic, absolute standard, highly accurate detector. https://ntrs.nasa.gov/citations/19710000130
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