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spontaneous absorption

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

  • ALIYAH AND ABSORPTION — GENERAL SURVEY Introduction Aliyah, ascension or going up, is the coming of Jews as individuals or in groups, from exile or diaspora to live in the Land of Israel. Those who go up for this purpose are known as olim – a term used in the Bible for… …   Encyclopedia of Judaism

  • McCumber relation — The McCumber relation (or McCumber theory) refers to the effective cross sections of absorption and emission of light in the physics of solid state lasers [1][2]. Contents 1 Definition 2 Gain …   Wikipedia

  • Gorham-Stout-Syndrom — Klassifikation nach ICD 10 M89.5 Osteolyse, jede Lokalisation D18.1 Lymphangiom, jede Lokalisation …   Deutsch Wikipedia

  • Arthur Purdy Stout — (1918) Arthur Purdy Stout (* 30. November 1885 in New York City; † 21. Dezember 1967 ebenda) war ein US amerikanischer Chirurg und Pathologe. Inhaltsverzeichnis …   Deutsch Wikipedia

  • Lemuel Whittington Gorham — Lemuel Whittington Gorham, in seinen Veröffentlichungen meist nur L. Whittington Gorham, (* 20. Juni 1885 in Albany (New York); † 27. Juli 1968) war ein US amerikanischer Internist. Inhaltsverzeichnis 1 Leben 2 Werk 3 Literatur …   Deutsch Wikipedia

  • Population inversion — In physics, specifically statistical mechanics, a population inversion occurs when a system (such as a group of atoms or molecules) exists in state with more members in an excited state than in lower energy states. The concept is of fundamental… …   Wikipedia

  • spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… …   Universalium

  • Photon — This article is about the elementary particle of light. For other uses, see Photon (disambiguation). Photon Photons emitted in a coherent beam from a laser Composition Elementary particle …   Wikipedia

  • radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

  • drug — drug1 /drug/, n., v., drugged, drugging. n. 1. Pharm. a chemical substance used in the treatment, cure, prevention, or diagnosis of disease or used to otherwise enhance physical or mental well being. 2. (in federal law) a. any substance… …   Universalium

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