| bolometer | <physics> An instrument for measuring minute quantities of radiant heat, especially in different parts of the spectrum. Synonym: actinic balance, thermic balance. Origin: Gr. A stroke, ray. Source: Websters Dictionary (01 Mar 1998) |
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| bolometer |
an instrument that measures heat radiation; extremely sensitive
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| bolometer |
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| bolometer |
(Also called actinic balance.) An instrument that measures the intensity of radiant energy by employing a thermally sensitive electrical resistor; a type of actinometer. In meteorological applications, two identical, blackened, thermally sensitive electrical resistors are used in a Wheatstone bridge circuit. Radiation is allowed to fall on one of the elements, causing a change in its resistance. The change is a measure of the intensity of the radiation.
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| bolometer |
Instrument for measuring the intensity of radiant energy. Its principle is based on the variation of electrical resistance, with the incoming radiation, of one or both the metallic strips which the instrument comprises.
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| bolometer |
Infrared thermometer detector consisting of a resistance thermometer arranged for response to radiation.
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| bolometer | an instrument that measures heat radiation |
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