1.

Bolometer is used to measure

Answer»

 Temperature



A bolometer is a device for MEASURING the power of incident electromagnetic radiation via the heating of a material with a temperature-dependent ELECTRICAL resistance. It was invented in 1878 by the American astronomer Samuel Pierpont Langley. A bolometer consists of an absorptive element, such as a thin layer of metal, connected to a THERMAL reservoir (a body of CONSTANT temperature) through a thermal link. The RESULT is that any radiation impinging on the absorptive element raises its temperature above that of the reservoir — the greater the absorbed power, the higher the temperature.



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