Emittieren

Emittieren is a German verb meaning to emit or discharge something from a source. It is used for the release of energy, matter, or signals into the surrounding environment or space. The term is common in technical and scientific writing. Etymologically it comes from the Latin emittere via the French émmettre, and in German the prefix e- signals outward sending. In everyday language, more common verbs such as ausstoßen, abgeben, or freisetzen are often preferred.

In physics and engineering, emission describes the release of energy in the form of electromagnetic radiation or particles by a source. A lamp, the sun, or a hot object emits light; atoms can emit photons through spontaneous or stimulated processes. The emission spectrum of a substance reveals the wavelengths it emits. Thermal radiation is governed by temperature and material emissivity, with blackbody radiation as an idealized reference.

In chemistry and environmental science, emissions refer to released gases, aerosols, or vapors resulting from chemical reactions, industrial processes, or energy production. Common atmospheric pollutants include carbon dioxide (CO2), methane (CH4), nitrogen oxides (NOx), and sulfur dioxide (SO2). Emission measurements are compiled in inventories and used in regulatory contexts. Technologies such as filters, scrubbers, and catalytic converters, as well as process changes, are employed to reduce emissions.

Notes: The term emittieren is formal and technical; in non-technical text, speakers often use ausstoßen or freisetzen for similar meanings. The noun die Emission is used in German to refer to the act or result of emitting, and the related English cognate emission.