gas heat | heating system that burns natural gas |
heat engine | any engine that makes use of heat to do work |
heat exchanger | device that transfers heat from one liquid to another without allowing them to mix |
heating system heating plant heating heat | utility to warm a building, the heating system wasn't working, they have radiant heating |
heat lamp infrared lamp | electric heater consisting of a high-power incandescent lamp that emits infrared radiation, the bathroom could be warmed by an infrared lamp |
heat pump | apparatus that extracts heat from a liquid that is at a higher temperature than its surroundings, can be used to transfer heat from a reservoir outside in order to heat a building |
heat-seeking missile | a missile with a guidance system that directs it toward targets emitting infrared radiation (as the emissions of a jet engine) |
heat shield | a protective covering that protects a spacecraft from overheating on reentry |
heat sink | a metal conductor specially designed to conduct (and radiate) heat |
solar thermal system | a system that converts sunlight into heat |
steam heat steam heating | a heating system in which steam is generated in boilers and piped to radiators |
thermal printer | a printer that produces characters by applying heat to special paper that is sensitive to heat |
thermal reactor | a nuclear reactor in which nuclear fissions are caused by neutrons that are slowed down by a moderator |
thermistor thermal resistor | 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 |
heat warmth passion | the trait of being intensely emotional |
heat content total heat enthalpy H | (thermodynamics) a thermodynamic quantity equal to the internal energy of a system plus the product of its volume and pressure, enthalpy is the amount of energy in a system capable of doing mechanical work |
body temperature blood heat | temperature of the body, normally . F or C in humans, usually measured to obtain a quick evaluation of a person's health |
hotness heat high temperature | the presence of heat |
fieriness red heat | the heat or the color of fire |
white heat | the hotness of something heated until it turns white |
thermal barrier heat barrier | a limit to high speed flight imposed by aerodynamic heating |
heat warmth | the sensation caused by heat energy |
kinetic theory of heat | a theory that the temperature of a body increases when kinetic energy increases |
dead heat | a tie in a race |
heat flash | a flash of intense heat (as released by an atomic explosion) |
heat lightning | bright flashes of light near the horizon without thunder (especially on hot evenings), usually attributed to distant lightning that is reflected by clouds |
heat | a preliminary race in which the winner advances to a more important race |
hot spring thermal spring | a natural spring of water at a temperature ofF or above |
heat heat energy | a form of energy that is transferred by a difference in temperature |
heat of dissociation | the heat required for a fluid substance to break up into simpler constituents |
heat of formation | the heat evolved or absorbed during the formation of one mole of a substance from its component elements |
heat of solution | the heat evolved or absorbed when one mole of a substance is dissolved in a large volume of a solvent |
latent heat heat of transformation | heat absorbed or radiated during a change of phase at a constant temperature and pressure |
heat of condensation | heat liberated by a unit mass of gas at its boiling point as it condenses into a liquid, the heat of condensation is equal to the heat of vaporization |
heat of fusion | heat absorbed by a unit mass of a solid at its melting point in order to convert the solid into a liquid at the same temperature, the heat of fusion is equal to the heat of solidification |
heat of solidification | heat liberated by a unit mass of liquid at its freezing point when it solidifies |
heat of sublimation | heat absorbed by a unit mass of material when it changes from a solid to a gaseous state |
heat of vaporization heat of vaporisation | heat absorbed by a unit mass of a material at its boiling point in order to convert the material into a gas at the same temperature |
specific heat | the heat required to raise the temperature of one gram of a substance one degree centigrade |
heat ray | a ray that produces a thermal effect |
heat wave | a wave of unusually hot weather |
thermal | rising current of warm air |
heat dissipation | dissipation of heat |
thermionic emission thermal emission | the emission of electrons from very hot substances |
work unit heat unit energy unit | a unit of measurement for work |
British thermal unit BTU B.Th.U. | 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 . calories |
thermal equilibrium | a state in which all parts of a system are at the same temperature |
estrus oestrus heat rut | applies to nonhuman mammals: a state or period of heightened sexual arousal and activity |
heatstroke heat hyperpyrexia | collapse caused by exposure to excessive heat |
heat exhaustion heat prostration | a condition marked by dizziness and nausea and weakness caused by depletion of body fluids and electrolytes |