Bolometer

A bolometer (Greek: βολόμετρον `bolometron`, meaning measurer (-μετρον) of thrown things (βολο-) ) 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 Langl.....
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bolometer

(bo-lom´ә-tәr) an instrument for measuring the force of the heartbeat. an instrument for measuring minute degrees of radiant heat.
Found on http://www.encyclo.co.uk/local/21001

bolometer

[n] - an instrument that measures heat radiation
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Bolometer

• (n.) An instrument for measuring minute quantities of radiant heat, especially in different parts of the spectrum; -- called also actinic balance, thermic balance.
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bolometer

noun an instrument that measures heat radiation; extremely sensitive
Found on https://www.encyclo.co.uk/local/20974

Bolometer

Bo·lom'e·ter noun [ Greek ... a stroke, ray + -meter .] (Physics) An instrument for measuring minute quantities of radiant heat, especially in different parts of the spectrum; -- called also actinic balance , thermic balance . S. P. Langley.
Found on http://www.encyclo.co.uk/webster/B/75

Bolometer

A bolometer is an electrical instrument, invented by Langley, which is sensitive to radiant heat, and who used it to make discoveries in the ultra red rays of the spectrum.
Found on http://www.probertencyclopaedia.com/browse/GB.HTM

Bolometer

A device for measuring minute amounts of radiant energy by determining the changes of resistance in an electric conductor caused by changes in its temperature.
Found on http://www.diracdelta.co.uk/science/source/b/o/bolometer/source.html

bolometer

a device for measuring power which contains a power-absorbing element in which the resistance change related to the temperature coefficient of resistivity is used as a means of measuring the power NOTE - The absorbing element may be a barretter with a positive temperature coefficient, a thermistor with a negative temperature coefficient, or other s...
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=726-21-04

Bolometer

A sensitive radiation detector.
Found on http://www.kidsastronomy.com/dictionary.htm

Bolometer

An instrument used to measure heat radiation.
Found on http://www.encyclo.co.uk/local/20448

bolometer

An instrument used to measure radiant energy, usually in the infrared and microwave regions of the electromagnetic spectrum. It comprises a lens or stop system which focused the test radiation on thermoconductive device (usually a thermistor), which is set in a Wheatstone bridge circuit with another...
Found on http://www.daviddarling.info/encyclopedia/B/bolometer.html

bolometer

an IR detector where changes in temperature of the responsive element due to incidentradiation causes a change in conductivity of the element.
Found on http://www.chemistry-dictionary.com/definition/bolometer.php

bolometer

bolometer (bōlom'utur, bu–) , instrument for detecting and measuring radiation, e.g., visible light, infrared radiation, and ultraviolet radiation, in amounts as small as one millionth of an erg. The bolometer was invented in 1880 by Samuel P. Langley. Basically it consists of a radi...
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bolometer

instrument for measuring radiant energy or infrared light
Found on http://phrontistery.info/b.html

bolometer

instrument for measuring radiation by means of the rise in temperature of a blackened metal strip in one of the arms of a resistance bridge. In the ... [4 related articles]
Found on http://www.britannica.com/eb/a-z/b/88

bolometer

thermal detector of optical radiation in which the heating of the part that absorbs the radiation causes a change in its electrical resistance
Found on http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=845-05-48

bolometer

Type: Term Pronunciation: bō-lom′ĕ-ter Definitions: 1. An instrument for determining minute degrees of radiant heat. 2. An obsolete instrument for measuring the force of the heartbeat as distinguished from the blood pressure.
Found on http://www.medilexicon.com/medicaldictionary.php?t=11150
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