lémission

L'émission is a French term used to refer to a broadcast program on radio or television, as well as to the physical process of emitting energy or particles. In media usage, it denotes a scheduled program transmitted by a broadcaster, which may be live or pre-recorded. Emissions are produced by a team of writers, producers, and technicians and are distributed through various platforms, including traditional terrestrial channels, cable, and online streams. The management of an émission includes programming decisions, rights acquisition, on-air talent, advertising, and audience measurement. The concept varies by country and broadcaster, with public service media often emphasizing informational or cultural programming, while commercial networks focus on audience reach and revenue.

In physics, emission refers to the release of energy in the form of photons or particles by a system transitioning from a higher to a lower energy state. Spontaneous emission occurs without external stimulation, while stimulated emission is triggered by an incident photon and is fundamental to laser operation. Emission spectra reveal the energy levels of atoms and molecules and are used in spectroscopy, astrophysics, and materials science.

Etymology: from Latin emissio, "a sending forth." In French, the word l'émission commonly appears with its apostrophe, but may be used for both media and physics senses depending on context.