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Definition of "Quartz Crystal" |
Also called a crystal. [Oscillator Manufacturers] / Quartz is the second most abundant mineral in the Earth's continental crust, after feldspar. It is made up of a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2. / A method of signaling in teletypewriter transmission in which direct currents flowing in opposite directions represent a mark and a space respectively, and absence of current indicates a no-signal condition. By extension, any system of signaling that uses three conditions, representing a mark, a space, or a no-signal condition. |
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