Halide — Halide, nach Berzelius neutrale organische Verbindungen, die sich aber von anderen ähnlichen dadurch unterscheiden, daß sie wie die unorganischen aus einer Base u. einer Säure bestehen, welche erstere in diesem Falle ein Oxyd ist, das auf… … Pierer's Universal-Lexikon
alkali metal — Chem. any of the group of univalent metals including potassium, sodium, lithium, rubidium, cesium, and francium, whose hydroxides are alkalis. [1880 85] * * * Any of the six chemical elements in the leftmost group of the periodic table (lithium,… … Universalium
halide mineral — Any of a group of naturally occurring inorganic compounds that contain a halogen such as fluorine, chlorine, iodine, or bromine as the anion. Such compounds, with the notable exceptions of fluorite, halite, and sylvite, are rare and of very local … Universalium
Metal-halide lamp — A metal halide gas discharge lighting system provides illumination for a college baseball game at Olsen Field in College Station, Texas, United States. Note the various colors of the lights as they warm up. Metal halide lamps, a member of the… … 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
crystal — crystallike, adj. /kris tl/, n., adj., v., crystaled, crystaling or (esp. Brit.) crystalled, crystalling. n. 1. a clear, transparent mineral or glass resembling ice. 2. the transparent form of crystallized quartz. 3. Chem., Mineral. a solid body… … Universalium
Crystal — /kris tl/, n. 1. a city in SE Minnesota, near Minneapolis. 25,543. 2. a female given name. * * * I Any solid material whose atoms are arranged in a definite pattern and whose surface regularity reflects its internal symmetry. Each of a crystal s… … 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
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
Rubidium chloride — Chembox new Name = Rubidium chloride ImageFile = Rubidium chloride 3D ionic.png ImageName = Rubidium chloride s NaCl structure ImageFile1 = Rubidium chloride CsCl structure 3D ionic.png ImageName1 = Rubidium chloride s CsCl structure OtherNames … Wikipedia
