- alkali-earth halide
- • халогенид на алкалоземен елемент
English-Bulgarian polytechnical dictionary . 2013.
English-Bulgarian polytechnical dictionary . 2013.
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
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
Cyclopentadienyl complex — Zirconocene dichloride, a cyclopentadienyl complex A cyclopentadienyl complex is a metal complex with one or more cyclopentadienyl groups (C5H5−, abbreviated as Cp−). Based on the type of bonding between the metals and the cyclopentadienyl]]… … Wikipedia
Protactinium — thorium ← protactinium → uranium Pr ↑ Pa ↓ … Wikipedia
Silver — This article is about the chemical element. For the color, see Silver (color). For other uses, see Silver (disambiguation). palladium ← silver → cadmium … 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
Niobium — zirconium ← niobium → molybdenum V ↑ Nb ↓ Ta … Wikipedia
Zinc — This article is about the metallic element. For other uses, see Zinc (disambiguation). copper ← zinc → gallium ↑ Zn ↓ Cd … Wikipedia
sodium — /soh dee euhm/, n. 1. Chem. a soft, silver white, metallic element that oxidizes rapidly in moist air, occurring in nature only in the combined state, and used in the synthesis of sodium peroxide, sodium cyanide, and tetraethyllead: a necessary… … Universalium