rare-earth activator

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• Phosphor — A phosphor is a substance that exhibits the phenomenon of phosphorescence (sustained glowing after exposure to energized particles such as electrons).Phosphors are transition metal compounds or rare earth compounds of various types. The most… …   Wikipedia

• Europium — (pronEng|jʊˈroʊpiəm) is a chemical element with the symbol Eu and atomic number 63. It was named after the continent Europe. Characteristics Europium is the most reactive of the rare earth elements; it rapidly oxidizes in air, and resembles… …   Wikipedia

• europium — /yoo roh pee euhm, yeuh /, n. Chem. a rare earth metallic element whose salts are light pink. Symbol: Eu; at. wt.: 151.96; at. no.: 63. [1900 05; EUROPE + IUM] * * * ▪ chemical element  (Eu), chemical element, rare earth metal of the lanthanoid… …   Universalium

• Scintillator — Scintillation crystal surrounded by various scintillation detector assemblies …   Wikipedia

• Ethyl acetate — Chembox new Name = Ethyl acetate ImageFile = Ethyl acetate 2D skeletal.png ImageName = Ethyl acetate ImageFile1 = Ethyl acetate 3D balls.png ImageName1 = Ethyl acetate IUPACName = Ethyl ethanoate OtherNames = ethyl ester, acetic ester, ester of… …   Wikipedia

• List of Dinosaur King characters — This is a list of characters that appear in Dinosaur King. The English versions of the series use names differing from the Japanese versions; in this article the English names are used.[1] Contents 1 Characters 1.1 D Team 1.2 …   Wikipedia

• 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

• Optimus Prime — is a fictional character from the Transformers franchise. Prime is the leader of the autobots, a faction of transforming robots from the planet Cybertron. The autobots are constantly waging war against a rival faction of transforming robots… …   Wikipedia

• Grimlock — is the name of several fictional characters in the Transformers universes.Transformers: Generation 1Transformers character name = Grimlock caption = affiliation = Autobot subgroup =Action Masters, Deluxe Vehicles, Dinobots, Pretenders rank = 9 5… …   Wikipedia

• Eternal Champions — Infobox VG title = Eternal Champions developer = Sega Interactive publisher = Sega released = 1993 designer = Michael Latham genre = 2D Versus Fighting modes = Single player, Vs. Mode ratings = VRC: MA 13, ESRB: T platforms = Mega Drive/Genesis,… …   Wikipedia

• photography, technology of — Introduction       equipment, techniques, and processes used in the production of photographs.  The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …   Universalium