Spectral hygrometer, which is also called optical hygrometer determines the amount of precipitable moisture in a given region of the atmosphere by measuring the attenuation of radiant energy caused by the absorption bands of water vapor.
Ref: 124408/2006-10-28
Other Database Pages Exist for this Phrase: Hygrometer (Ein Hygrometer (Feuchtemesser) ist ein Instrument. ..)Alternative Spellings (Synonyms):
Hygrometern