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bolometer

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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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Researchers didn't have to wait anywhere near that long to detect the tell-tale alpha decays because the huge number of bismuth atoms in even a single bite-size bolometer crystal guarantees that some atoms will break down in a matter of days, if they break down at all, de Marcillac says.
Not even bismuth-209 lasts forever. (Physics) by Science News
The effective efficiency of the two bolometer mounts was measured in the PSB calorimeter in Singapore in June and in the NIST calorimeter in July.
NIST staff develop microwave power standard for Singapore Standards ... by Journal of Research of the National Institute of Standards and Technology
The Fire Warrior employs a state-of-art bolometer to collect critical information and display it through a hands-free virtual imaging module developed by eMagin.
eMagin Microdisplays Dazzle at SIGGRAPH CyberFashion Show by Business Wire
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