crystal twinning
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Crystal twinning — Diagram of twinned crystals of Albite. On the more perfect cleavage, which is parallel to the basal plane (P), is a system of fine striations, parallel to the second cleavage (M). Crystal twinning occurs when two separate crystals share some of… … Wikipedia
Twinning — (making a twin of) may have the following meanings:* In biology and agriculture, producing two offspring (i.e., twins) at a time, or having a tendency to do so; * City and town twinning; * eTwinning, a collaboration between schools in which two… … Wikipedia
twinning — /twin ing/, n. 1. the bearing of two children at one birth. 2. the coupling of two persons or things; union. 3. Crystall. the union of crystals to form a twin. [1565 75; TWIN1 + ING1] * * * ▪ crystallography in crystallography, regular… … Universalium
Crystal oscillator — A miniature 4 MHz quartz crystal enclosed in a hermetically sealed HC 49/US package, used as the resonator in a crystal oscillator. A crystal oscillator is an electronic oscillator circuit that uses the mechanical resonance of a vibrating crystal … Wikipedia
Crystal habit — This article is about the descriptive term used in mineralogy. For the addictive drug, see crystal methamphetamine. Pyrite sun (or dollar) in laminated shale matrix. Between tightly spaced layers of shale, the aggregate was forced to grow in a… … Wikipedia
Twinning — Twin ning, n. (Crystallog.) The assemblage of two or more crystals, or parts of crystals, in reversed position with reference to each other in accordance with some definite law; also, rarely, in artificial twinning (accomplished for example by… … The Collaborative International Dictionary of English
Twinning axis — Twinning Twin ning, n. (Crystallog.) The assemblage of two or more crystals, or parts of crystals, in reversed position with reference to each other in accordance with some definite law; also, rarely, in artificial twinning (accomplished for… … The Collaborative International Dictionary of English
Twinning plane — Twinning Twin ning, n. (Crystallog.) The assemblage of two or more crystals, or parts of crystals, in reversed position with reference to each other in accordance with some definite law; also, rarely, in artificial twinning (accomplished for… … The Collaborative International Dictionary of English
twinning — [twin′iŋ] n. 1. the bearing of twins 2. a pairing or coupling 3. the formation of a twin crystal or crystals … English World dictionary
Crystal structure of boron-rich metal borides — Two single crystals of YB66 (1 cm diameter) grown by floating zone technique using (100) oriented seeds. In the top crystal, the seed (left from the black line) has same diameter as the crystal. In the bottom crystal (sliced), the seed is much… … Wikipedia
