bolometer
noun
bo·lom·e·ter
bō-ˈlä-mə-tər 
: a very sensitive thermometer whose electrical resistance varies with temperature and which is used in the detection and measurement of feeble thermal radiation and is especially adapted to the study of infrared spectra
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“Bolometer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bolometer. Accessed 5 Jul. 2026.
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bolometer
noun
bo·lom·e·ter
bō-ˈläm-ət-ər
: a very sensitive thermometer used in the detection and measurement of feeble thermal radiation and especially adapted to the study of infrared spectra
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