émission de fluorescence

См. также в других словарях:

• Fluorescence spectroscopy — aka fluorometry or spectrofluorometry, is a type of electromagnetic spectroscopy which analyzes fluorescence from a sample. It involves using a beam of light, usually ultraviolet light, that excites the electrons in molecules of certain compounds …   Wikipedia

• fluorescence — [ flyɔresɑ̃s ] n. f. • 1856; mot angl. (1852), de fluor, d apr. phosphorescence ♦ Phys. Luminescence d une substance (solide, liquide ou gaz) due à une transition spontanée des molécules, d un état excité vers l état fondamental. Fluorescence… …   Encyclopédie Universelle

• Emission spectroscopy — is a spectroscopic technique which examines the wavelengths of photons emitted by atoms or molecules during their transition from an excited state to a lower energy state. Each element emits a characteristic set of discrete wavelengths according… …   Wikipedia

• Fluorescence lifetime imaging — or FLIM is a powerful tool for producing an image based on the differences in the exponential decay rate of the fluorescence from a fluorescent sample. It can be used as an imaging technique in confocal microscopy, Two photon excitation… …   Wikipedia

• Fluorescence interference contrast microscopy — Fluorescence interference contrast (FLIC) microscopy is a microscopic technique developed to achieve z resolution on the nanometer scale. FLIC occurs whenever fluorescent objects are in the vicinity of a reflecting surface (e.g. Si wafer). The… …   Wikipedia

• Fluorescence recovery after photobleaching — (FRAP) denotes an optical technique capable of quantifying the two dimensional lateral diffusion of a molecularly thin film containing fluorescently labeled probes, or to examine single cells. This technique is very useful in biological studies… …   Wikipedia

• Fluorescence Induite par Laser — Sommaire 1 Présentation générale 2 Principe physique 3 Ensemencement 4 Acquisition du signal …   Wikipédia en Français

• fluorescence energy transfer — (= fluorescence resonant energy transfer) Transfer of energy from one fluorochrome to another. The emission wavelength of the fluorochrome excited by the incident light must approximately match the excitation wavelength of the second fluorochrome …   Dictionary of molecular biology

• fluorescence — Emission of a longer wavelength radiation by a substance as a consequence of absorption of energy from a shorter wavelength radiation, continuing only as long as the stimulus is present; distinguished from phosphorescence, which …   Medical dictionary

• Fluorescence — Flu o*res cence, n. [From {Fluor}.] (Chemistry, Optics) A luminescence emitted by certain substances due to the absorption of radiation at one wavelength, and the almost instantaneous re emission of radiation at another, usually longer wavelength …   The Collaborative International Dictionary of English

• Fluorescence — Fluorescent minerals emit visible light when exposed to ultraviolet light Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation of a different wavelength.[1] It is a form of luminescence.… …   Wikipedia