thermal radiation
Physics term for electromagnetic radiation emitted by a body due to its temperature. Used in scientific and technical contexts.
Thermal radiation becomes stronger as the temperature of an object increases.
The Earth emits thermal radiation into space.
対流 is convection (heat transfer through fluid movement), distinct from radiative transfer.
Compound of 熱 (heat) and 放射 (radiation). A straightforward technical term with no obscure historical derivation.