Noun Concept
Categories: Energy conversion, Articles with short description, Electricity, Thermodynamics, Thomas Edison
thermionic emission  thermal emission  thermal radiation
The emission of electrons from very hot substances WordNet 3.0
The emission of electrons from very hot substances WordNet 3.0 & WordNet 2020
Thermal radiation is electromagnetic radiation generated by the thermal motion of particles in matter. Wikipedia
Thermionic emission is the liberation of electrons from an electrode by virtue of its temperature. Wikipedia
Electromagnetic radiation that emanates from every object above absolute zero, in proportion to the fourth power of the temperature of the object Wikipedia Disambiguation
The flow of charged particles called thermions from a charged metal or a charged metal oxide surface, archaically known as the Edison effect Wikipedia Disambiguation
Thermally induced flow of charge carriers from a surface Wikidata
The electromagnetic radiation emitted from a body as a consequence of its temperature; increasing the temperature of the body increases the amount of radiation produced, and shifts it to shorter wavelengths (higher frequencies) in a manner explained only by quantum mechanics. Wiktionary
Electromagnetic radiation emitted from a body. Wiktionary (translation)