- cesium fluorescence
- флюоресценсия цезия
English-Russian dictionary of telecommunications and their abbreviations. A.V. Alexandrov.. 2004.
English-Russian dictionary of telecommunications and their abbreviations. A.V. Alexandrov.. 2004.
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
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
Scintillator — Scintillation crystal surrounded by various scintillation detector assemblies … Wikipedia
Two-photon excitation microscopy — is a fluorescence imaging technique that allows imaging of living tissue up to a very high depth, that is up to about one millimeter. Being a special variant of the multiphoton fluorescence microscope, it uses red shifted excitation light which… … Wikipedia
RADIOÉLÉMENTS ET RAYONNEMENTS IONISANTS — Les radioéléments sont des isotopes dont les noyaux sont instables, car ils possèdent un trop plein d’énergie; ils s’en libèrent spontanément, tel un ressort qui se détend, en une ou en plusieurs étapes, pour revenir à un état plus stable, en… … Encyclopédie Universelle
Iodure de potassium — Cristaux d iodure de potassium … Wikipédia en Français
HORLOGES ATOMIQUES — Les horloges atomiques utilisent des transitions entre des niveaux d’énergie bien définis de certains atomes. Leur développement, depuis les années 1950, fait appel à la conjonction de plusieurs disciplines. Il résulte, d’une part, des… … Encyclopédie Universelle
atomic clock — an extremely accurate electronic clock regulated by the resonance frequency of atoms or molecules of certain substances, as cesium. [1935 40] * * * ▪ instrument type of clock that uses certain resonance frequencies of atoms (usually cesium… … Universalium
LASERS — Les lasers (le mot «laser» est formé des initiales des mots anglais light amplification by stimulated emission of radiations , signifiant: amplification de lumière par émission stimulée de rayonnement) sont des sources nouvelles de rayonnement,… … Encyclopédie Universelle
Two-photon absorption — (TPA) is the simultaneous absorption of two photons of identical or different frequencies in order to excite a molecule from one state (usually the ground state) to a higher energy electronic state. The energy difference between the involved… … Wikipedia
NIST-F1 — NIST F1, source of the official time of the United States NIST F1 is a cesium fountain clock or atomic clock in the National Institute of Standards and Technology (NIST) in Boulder, Colorado, and serves as the United States primary time and… … Wikipedia