thermal : Idioms & Phrases

Index

british thermal unit

  • noun a unit of heat equal to the amount of heat required to raise one pound of water one degree Fahrenheit at one atmosphere pressure; equivalent to 251.997 calories
    BTU; B.Th.U..
WordNet

solar thermal system

  • noun a system that converts sunlight into heat
WordNet

thermal barrier

  • noun a limit to high speed flight imposed by aerodynamic heating
    heat barrier.
WordNet

Thermal conductivity, Thermal spectrum

  • . See under Conductivity, and Spectrum.
Webster 1913

thermal emission

  • noun the emission of electrons from very hot substances
    thermionic emission.
WordNet

thermal equilibrium

  • noun a state in which all parts of a system are at the same temperature
WordNet

thermal pollution

  • noun harm to lakes and rivers resulting from the release of excessive waste heat into them
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thermal printer

  • noun a printer that produces characters by applying heat to special paper that is sensitive to heat
WordNet

thermal reactor

  • noun a nuclear reactor in which nuclear fissions are caused by neutrons that are slowed down by a moderator
WordNet

thermal resistor

  • noun a semiconductor device made of materials whose resistance varies as a function of temperature; can be used to compensate for temperature variation in other components of a circuit
    thermistor.
WordNet

thermal spring

  • noun a natural spring of water at a temperature of 70 F or above
    hot spring.
WordNet

Thermal unit

  • (Physics), a unit chosen for the comparison or calculation of quantities of heat. The unit most commonly employed is the amount of heat necessary to raise the temperature of one gram or one pound of water from zero to one degree Centigrade. See Calorie, and under Unit.
Webster 1913