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bolometer
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    Also found in: Dictionary/thesaurus, Medical, Encyclopedia, Wikipedia 0.02 sec.

bolometer

Sensitive thermometer that measures the energy of radiation by registering the change in electrical resistance of a fine wire when it is exposed to heat or light.

The US astronomer Samuel Langley devised it in 1880 for measuring radiation from stars.



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NIST microwave power standards consist of microcalorimeters as primary reference standards and bolometric detectors as secondary transfer standards.
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