| thermal radiation |
Electromagnetic radiation emitted by all matter in thermal equilibrium as the result of the thermal excitation of its molecules.
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| thermistor |
A device with electrical resistance that varies markedly and monotonically and that possesses a negative temperature coefficient of resistivity. The thermistors commonly used in meteorology are composed of solid semiconducting materials with resistance that decreases 4% per
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| thermogram |
The record of a thermograph.
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| thermoscope |
An instrument that measures temperature changes, in contrast with a thermometer, which measures the absolute temperature. Middleton, WEK, 1969: Invention of the Meteorological Instruments, Johns Hopkins Press, Baltimore, p. 44.
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| thermodynamics |
A collection of ideas and axioms, leading to differential equations specifying rates of change, that describes our experience with processes that involve fluxes of heat and changes in energy content. Thermodynamics introduces a new concept
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