metallic bond — Chem. the type of chemical bond between atoms in a metallic element, formed by the valence electrons moving freely through the metal lattice. * * * ▪ chemistry force that holds atoms together in a metallic substance (metal). Such a solid… … Universalium
Metallic bond — Metallic bonding is the electrostatic attractive forces between the delocalized electrons, called conduction electrons, gathered in an electron sea , and the positively charged metal ions. Understood as the sharing of free electrons among a… … Wikipedia
Crystal radio — Crystal set redirects here. For the Australian rock band, see The Crystal Set. A modern reproduction of an antique crystal set. It is tuned to different stations by moving the sliding contact (right) up and down the tuning coil (red). The device… … Wikipedia
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
Crystal structure — In mineralogy and crystallography, crystal structure is a unique arrangement of atoms or molecules in a crystalline liquid or solid. A crystal structure is composed of a pattern, a set of atoms arranged in a particular way, and a lattice… … Wikipedia
Metallic hydrogen — Some gas giants have metallic hydrogen in their centers Metallic hydrogen is a state of hydrogen which results when it is sufficiently compressed and undergoes a phase transition; it is an example of degenerate matter. Solid metallic hydrogen is… … Wikipedia
Crystal growth — Crystallization Concepts … Wikipedia
Crystal bar process — An apparatus used for the crystal bar process. The main body is made of quartz glass. (1) to vacuum pump, (2) 6 mm molybdenum electrode, (3) molybdenum net, (4) chamber for the raw metal, (5) tungsten wire The crystal bar process (also known as… … Wikipedia
crystal detector — noun a detector consisting of a fine wire in contact with a galena crystal; acts as a rectifier • Hypernyms: ↑detector • Part Meronyms: ↑crystal * * * noun radio : a detector that depends for its operation on the rectifying action of the surface… … Useful english dictionary
