electron-excited phosphor

См. также в других словарях:

• phosphor — /fos feuhr, fawr/, n. 1. any of a number of substances that exhibit luminescence when struck by light of certain wavelengths, as by ultraviolet. 2. Literary. a phosphorescent substance. adj. 3. Archaic. phosphorescent. [1625 35; < F phosphore < L …   Universalium

• Phosphor — /fos feuhr, fawr/, n. the morning star, esp. Venus. Also, Phosphore /fos fawr, fohr/, Phosphorus. [1625 35; < L Phosphorus < Gk Phosphóros the morning star, lit., the light bringing one, equiv. to phôs light + phoros bringing; see PHOROUS] * * *… …   Universalium

• Photoemission electron microscopy — (PEEM, also called photoelectron microscopy, PEM) is a widely used type of emission microscopy. PEEM utilizes local variations in electron emission to generate image contrast. The excitation is usually produced by UV light, synchrotron radiation… …   Wikipedia

• Surface-conduction electron-emitter display — A surface conduction electron emitter display (SED) is a flat panel display technology that uses surface conduction electron emitters for every individual display pixel. The surface conduction emitter emits electrons that excite a phosphor… …   Wikipedia

• Scanning electron microscope — These pollen grains taken on an SEM show the characteristic depth of field of SEM micrographs …   Wikipedia

• photoelectric effect — Physics. the phenomenon in which the absorption of electromagnetic radiation, as light, of sufficiently high frequency by a surface, usually metallic, induces the emission of electrons from the surface. Also called photoemission. [1890 95] * * *… …   Universalium

• luminescence — luminescent, adj. /looh meuh nes euhns/, n. 1. the emission of light not caused by incandescence and occurring at a temperature below that of incandescent bodies. 2. the light produced by such an emission. [1885 90; < L lumin (see LUMEN) +… …   Universalium

• radiation measurement — ▪ technology Introduction       technique for detecting the intensity and characteristics of ionizing radiation, such as alpha, beta, and gamma rays or neutrons, for the purpose of measurement.       The term ionizing radiation refers to those… …   Universalium

• photochemical reaction — Chemical reaction initiated by absorption of energy in the form of visible (light), ultraviolet, or infrared radiation. Primary photochemical processes occur as an immediate result, and secondary processes may follow. The most important example… …   Universalium

• 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

• Fluorescent lamp — A fluorescent lamp or fluorescent tube is a gas discharge lamp that uses electricity to excite mercury vapor. The excited mercury atoms produce short wave ultraviolet light that then causes a phosphor to fluoresce, producing visible light.Unlike… …   Wikipedia