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An instrument that measures radiant energy by correlating the radiation-induced change in electrical resistance of a blackened metal foil with the amount of radiation absorbed.

[Greek bolē, ray; see gwelə- in Indo-European roots + -meter.]

bo′lo·met′ric (bō′lə-mĕt′rĭk) adj.
bo′lo·met′ri·cal·ly adv.


(Electronics) a sensitive instrument for measuring radiant energy by the increase in the resistance of an electrical conductor
[C19: from bol-, from Greek bolē ray of light, stroke, from ballein to throw + -meter]
bolometric adj
ˌboloˈmetrically adv
boˈlometry n


(boʊˈlɒm ɪ tər, bə-)

a device for measuring minute amounts of radiant energy by means of changes of resistance in an electric conductor caused by changes in its temperature.
[1880–85; < Greek bol(ḗ) ray + -o- + -meter]
bo`lo•met′ric (-ləˈmɛ trɪk) adj.
bo`lo•met′ri•cal•ly, adv.


a device used in bolometry.
See also: Radiation
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.bolometer - an instrument that measures heat radiationbolometer - an instrument that measures heat radiation; extremely sensitive
measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something
References in periodicals archive ?
Taelea BM, Narayana H, Mukaro R (2008) Hopping photoconductivity and the effectiveness of phonon detection in GaAs:Zn bolometers.
1-meter receiver that is anchored below and forward of the primary is a focal plane of 1,274 antenna-coupled, polarization-sensitive bolometers that measure the angle of vibration of incoming light waves (see image at right).
Such advantages of MMAs render them potential candidates for bolometers, stealth and detection of explosives.
A prospective device using BGMRs can detect with higher speeds than existing broadband bolometers (used in many space observatories) while providing comparable sensitivity.
Bolometers are made from various materials that have a stable and relatively large resistance temperature coefficient.
Thus, the HFI bolometers, though operating in absolute mode, can receive thermal photons from the spacecraft itself much of which is in a 50 K environment.
Abancens is one of the scientists working on the ROSEBUD project (an acronym for Rare Objects SEarch with Bolometers UndergrounD), an international collaborative initiative between the Institut d'Astrophysique Spatiale and the University of Zaragoza, which is focusing on hunting for dark matter in the Milky Way.
Fifty-two bolometers are part of one set of detectors, the High Frequency Instrument.
On the thermal side are thermocouples, thermopiles, bolometers, and pneumatic (Golay) detectors.
In the subsequent talk principle of operation, fabrication, as well as experimental results fur hot electron bolometers (HEB) and SIS tunnel junctions as mixers for heterodyne submillimeter receivers are reviewed.
US astronomers will use 1,000 bolometers, or heat detectors, within the instrument to search for signs of dark energy, the substance thought to be causing the universe to expand.
FIBRE is the first astronomical demonstration of both TES submillimeter bolometers and SQUID multiplexers.