In physics and chemistry, heat is energy transferred from one body to another by thermal interactions. The transfer of energy can occur in a variety of ways, among them conduction, radiation, and convection. Heat is not a property of a system or body, but instead is always associated with a process of some kind, and is synonymous with heat flow and heat transfer.
Read more about Heat.
Some articles on heat:
... in biological systems "Countercurrent" heat exchangers occur naturally in the circulation system of fish, whales and other marine mammals ... from the skin carrying cold blood, causing the warm arterial blood to exchange heat with the cold venous blood ... This reduces the overall heat loss in cold waters ...
... Heat exchangers are widely used in industry both for cooling and heating large scale industrial processes ... The type and size of heat exchanger used can be tailored to suit a process depending on the type of fluid, its phase, temperature, density, viscosity, pressures, chemical composition and ... In many industrial processes there is waste of energy or a heat stream that is being exhausted, heat exchangers can be used to recover this heat and put it to use by heating a different stream in the process ...
... The carotid rete is a counter-current heat exchanging organ in some ungulates ... brain, flows via a network of vessels where heat is discharged to the veins of cooler blood descending from the nasal passages ... than the rest of the body, and therefore aids in tolerating bursts in metabolic heat production such as associated with outrunning cheetahs (during which the body temperature exceeds the maximum ...
... from ore (smelting) or in oil refineries and other chemical plants, for example as the heat source for fractional distillation columns ... in chemical industries or for providing heat to chemical reactions for processes like cracking, and is part of the standard English names for many metallurgical ... The heat energy to fuel a furnace may be supplied directly by fuel combustion, by electricity such as the electric arc furnace, or through induction heating in ...
... A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another ... The classic example of a heat exchanger is found in an internal combustion engine in which a circulating fluid known as engine coolant flows through ...
More definitions of "heat":
- (noun): Applies to nonhuman mammals: a state or period of heightened sexual arousal and activity.
Synonyms: estrus, oestrus, rut
- (noun): A preliminary race in which the winner advances to a more important race.
- (noun): A form of energy that is transferred by a difference in temperature.
Synonyms: heat energy
- (noun): The sensation caused by heat energy.
- (verb): Make hot or hotter.
Example: "Heat the soup"
Synonyms: heat up
- (verb): Provide with heat.
Example: "Heat the house"
Famous quotes containing the word heat:
“And suddenly, to be dying
Is not a little or mean or cheap thing,
Only wearying, the heat unbearable ...”
—John Ashbery (b. 1927)
“For my part, when I enter most intimately into what I call myself, I always stumble on some particular perception or other, of heat or cold, light or shade, love or hatred, pain or pleasure. I never can catch myself at any time without a perception, and never can observe anything but the perception.”
—David Hume (17111776)
“Two wooden tubs of blue hydrangeas stand at the foot of the stone steps.
The sky is a blue gum streaked with rose. The trees are black.
The grackles crack their throats of bone in the smooth air.
Moisture and heat have swollen the garden into a slum of bloom.
Pardie! Summer is like a fat beast, sleepy in mildew....”
—Wallace Stevens (18791955)