thermal energy


thermal energy

Internal energy of a system in thermodynamic equilibrium (see thermodynamics) by virtue of its temperature. A hot body has more thermal energy than a similar cold body, but a large tub of cold water may have more thermal energy than a cup of boiling water. Thermal energy can be transferred from one body, usually hotter, to a second body, usually colder, in three ways: conduction (see thermal conduction), convection, and radiation.

This entry comes from Encyclopædia Britannica Concise.
For the full entry on thermal energy, visit Britannica.com.

Seen & Heard

What made you look up thermal energy? Please tell us what you were reading, watching or discussing that led you here.