modulated crystal

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• 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 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

• crystal detector — Radio. a device for rectifying a modulated radio frequency signal, consisting of a crystal of germanium, silicon, galena, or the like with a cat whisker contact, permitting a high frequency current to pass freely in one direction only: one of the …   Universalium

• Liquid crystal display — LCD redirects here. For other uses, see LCD (disambiguation). Reflective twisted nematic liquid crystal display. Polarizing filter film with a vertical axis to polarize light as it enters. Glass substrate with ITO electrodes. The shapes of these… …   Wikipedia

• Calmodulin 1 — (phosphorylase kinase, delta) PDB rendering based on 1a29 …   Wikipedia

• Light-emitting diode — LED redirects here. For other uses, see LED (disambiguation). Light emitting diode Red, pure green and blue LEDs of the 5mm diffused type Type Passive, optoelectronic Working principle Electr …   Wikipedia

• Nitrogen-vacancy center — The nitrogen vacancy center (N V center) is one of numerous point defects in diamond. Its most explored and useful property is photoluminescence, which can be easily detected from an individual N V center. Electron spins at N V centers, localized …   Wikipedia

• Phonograph — Turntable redirects here. For other uses, see Turntable (disambiguation). Edison cylinder phonograph ca. 1899 …   Wikipedia

• Detector (radio) — Passband modulation v · d · e Analog modulation AM · …   Wikipedia

• Optical axis gratings — (OAGs) are gratings of optical axis of a birefringent material. In OAGs, the birefringence of the material is constant, while the direction of optical axis is periodically modulated in a fixed direction. In this way they are different from the… …   Wikipedia

• spectroscopy — spectroscopist /spek tros keuh pist/, n. /spek tros keuh pee, spek treuh skoh pee/, n. the science that deals with the use of the spectroscope and with spectrum analysis. [1865 70; SPECTRO + SCOPY] * * * Branch of analysis devoted to identifying… …   Universalium