quartz-crystal
21Quartz — This article is about the mineral. For other uses, see Quartz (disambiguation). Quartz Quartz crystal cluster from Tibet General Category …
22Quartz clock — A quartz clock is a clock that uses an electronic oscillator that is regulated by a quartz crystal to keep time. This crystal oscillator creates a signal with very precise frequency, so that quartz clocks are at least an order of magnitude more… …
23quartz — quartzose /kwawrt sohs/, quartzous /kwawrt seuhs/, adj. /kwawrts/, n. one of the commonest minerals, silicon dioxide, SiO2, having many varieties that differ in color, luster, etc., and occurring either in masses (as agate, bloodstone, chalcedony …
24Crystal oven — An OCXO inside an HP digital counter A crystal oven is a temperature controlled chamber used to maintain the quartz crystal in electronic crystal oscillators at a constant temperature, in order to prevent changes in the frequency due to… …
25crystal — 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… …
26quartz clock — noun see quartz crystal clock * * * quartz clock or quartz watch noun One in which a quartz crystal, energized by a microcircuit, does the work of the pendulum or hairspring of the traditional clock or watch • • • Main Entry: ↑quartz * * * quartz …
27quartz plate — noun : a piece of quartz crystal cut in such a way as to be active piezoelectrically; specifically : such a plate mounted with metal electrodes applied to its surfaces so that the combination is or resembles a condenser compare piezoelectric… …
28Crystal — Crystals redirects here. For other uses, see Crystals (disambiguation). This article is about crystalline solids. For the type of glass, see lead crystal. For other uses, see Crystal (disambiguation). Quartz crystal. The individual grains of this …
29Crystal ball — This article is about the fortune telling object. For other uses, see Crystal ball (disambiguation). The largest flawless quartz sphere is located in the National Museum of Natural History, Washington D.C., USA …
30crystal — /ˈkrɪstl / (say kristl) noun 1. a clear, transparent mineral or glass resembling ice. 2. the transparent form of crystallised quartz. 3. Chemistry, Mineralogy a solid body having a characteristic internal structure and enclosed by symmetrically… …
