Difference between revisions of "Radiometer"
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== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
| − | Radiometer, | + | Radiometer, Strahlungsmessgerät (Deut.); radiomètre (Fr.); |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Latest revision as of 06:56, 24 July 2013
Description
Any of several instruments used to measure the intensity of radiant energy. A crooks radiometer consists of a partially evacuated glass bulb that contains a small rotating vanes on an axis. One side of each vane is a black, strongly absorbing surface while the other side is a metallic reflective surface. Placing the instrument in a beam of infrared radiation (solar light) results in a differential heating pattern which causes the vane to rotate about the axis. The speed of rotation is proportional the the intensity of radiation.
Synonyms and Related Terms
Radiometer, Strahlungsmessgerät (Deut.); radiomètre (Fr.);