Heat energy
Heat Energy
Heat energy (pronunciation: /hiːt ˈɛnərdʒi/), also known as thermal energy, is a form of energy that is transferred between systems or objects with different temperatures (from the higher-temperature object to the lower-temperature object). The transfer of heat energy can result in a change of state or phase, increase in temperature, or in the performance of work.
Etymology
The term "heat" comes from the Old English hǣtu, from Proto-Germanic *haitaz. "Energy" is derived from the late Latin energia, from Greek energeia meaning activity or operation, which in turn comes from energos meaning active.
Related Terms
- Thermodynamics: The branch of physics that deals with heat and temperature, and their relation to energy, work, radiation, and properties of matter.
- Conduction: The process by which heat energy is transmitted through collisions between neighboring molecules.
- Convection: The transfer of heat by the actual movement of the warmed matter.
- Radiation: The emission of energy as electromagnetic waves or as moving subatomic particles.
- Temperature: A measure of the warmth or coldness of an object or substance with reference to a standard value.
- Kinetic Energy: The energy that a body possesses by virtue of being in motion.
See Also
External links
- Medical encyclopedia article on Heat energy
- Wikipedia's article - Heat energy
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