BOLOMETER

bolometer

(noun) an instrument that measures heat radiation; extremely sensitive

Source: WordNet® 3.1

Etymology

Noun

bolometer (plural bolometers)

(physics) A sensitive device for detecting and measuring the energy of electromagnetic radiation.

Source: Wiktionary

Bo*lom"e*ter, n. Etym: [Gr. a stroke, ray + -meter.] (Physics)

Definition: An instrument for measuring minute quantities of radiant heat, especially in different parts of the spectrum; -- called also actinic balance, thermic balance. S. P. Langley.

Source: Webster’s Unabridged Dictionary 1913 Edition

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