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hemispherical emittance (eh)
Standard
ECSS-Q-ST-70-31C Rev.1Definition
ratio of the radiant intensity of the specimen to that emitted by a black body radiator at the same temperature and under the same geometric and wavelength conditionsNotes
- NOTE Examples are: - Hemispherical emittance (eh) - conditions for incident or viewing of flux over a hemispherical region. - Normal emittance (en) - conditions for incidence or viewing through a solid angle normal to the specimen.
Relations
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