Thermal energy
Thermal Energy
Thermal energy (pronounced: /ˈθəːm(ə)l ˈɛnədʒi/) is the internal energy present in a system due to its temperature. It is a type of kinetic energy that is produced from the random movements of molecules within a substance.
Etymology
The term 'thermal' originates from the Greek word 'therme', meaning heat. 'Energy' comes from the Greek word 'energeia', which means activity or operation. In the context of physics, 'thermal energy' refers to the energy that is generated and measured by heat.
Related Terms
- Heat: In physics, heat is energy that spontaneously passes between a system and its surroundings in some way other than through work or the transfer of matter.
- Temperature: Temperature is a physical quantity that expresses hot and cold. It is the manifestation of thermal energy, present in all matter, which is the source of the occurrence of heat, a flow of energy, when a body is in contact with another that is colder.
- Kinetic Energy: Kinetic energy is the energy an object has because of its motion.
- Potential Energy: Potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.
- Thermodynamics: Thermodynamics is a branch of physics that deals with heat, work, and temperature, and their relation to energy, radiation, and physical properties of matter.
See Also
- Law of Conservation of Energy
- First Law of Thermodynamics
- Second Law of Thermodynamics
- Third Law of Thermodynamics
External links
- Medical encyclopedia article on Thermal energy
- Wikipedia's article - Thermal energy
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