spontaneous emission

См. также в других словарях:

• Spontaneous emission — is the process by which a light source such as an atom, molecule, nanocrystal or nucleus in an excited state undergoes a transition to the ground state and emits a photon. Spontaneous emission of light or luminescence is a fundamental process… …   Wikipedia

• spontaneous emission — spontaneous emission, Physics. the release of excess energy in the form of light by an excited atom: »Light produced by the sun and by ordinary electric lights is the result of spontaneous emission caused by heat (James P. Gordon) …   Useful english dictionary

• spontaneous emission — savaiminė emisija statusas T sritis fizika atitikmenys: angl. spontaneous emission vok. spontane Emission, f rus. спонтанная эмиссия, f pranc. émission spontanée, f …   Fizikos terminų žodynas

• Amplified spontaneous emission — (ASE) or superluminescence is light, produced by spontaneous emission, that has been optically amplified by the process of stimulated emission in a gain medium.Origins and problemsASE is produced when a laser gain medium is pumped to produce a… …   Wikipedia

• Spontaneous — means a self generated event, typically requiring no outside influence or help.The word spontaneous may also refer to:* Spontaneous abortion * Spontaneous bacterial peritonitis * Spontaneous combustion * Spontaneous emission * Spontaneous fission …   Wikipedia

• Emission coefficient — is a coefficient in the power output per unit time of an electromagnetic source, a calculated value in physics. It is also used as a measure of environmental emissions (by mass) per MWh of electricity generated, see: Emission factor. Scattering… …   Wikipedia

• Emission spectrum — The emission spectrum of a chemical element or chemical compound is the spectrum of frequencies of electromagnetic radiation emitted by the element s atoms or the compound s molecules when they are returned to a lower energy state. Each element s …   Wikipedia

• émission spontanée — savaiminė emisija statusas T sritis fizika atitikmenys: angl. spontaneous emission vok. spontane Emission, f rus. спонтанная эмиссия, f pranc. émission spontanée, f …   Fizikos terminų žodynas

• spontaneous fission — ▪ physics       type of radioactive decay in which certain unstable nuclei of heavier elements split into two nearly equal fragments (nuclei of lighter elements) and liberate a large amount of energy. Spontaneous fission, discovered (1941) by the …   Universalium

• emission — A discharge; referring usually to a discharge of the male internal genital organs into the internal urethra; the contents of the organs, including sperm cells, prostatic fluid, and seminal vesicle …   Medical dictionary

• spontaneous radiation — savaiminis spinduliavimas statusas T sritis radioelektronika atitikmenys: angl. spontaneous radiation vok. spontane Strahlung, f rus. спонтанное излучение, n pranc. émission spontanée, f …   Radioelektronikos terminų žodynas