cathode-ray indicator

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• cathode-ray tube — /kath ohd ray / a vacuum tube generating a focused beam of electrons that can be deflected by electric fields, magnetic fields, or both. The terminus of the beam is visible as a spot or line of luminescence caused by its impinging on a sensitized …   Universalium

• cathode-ray tube — /ˌkæθoʊd reɪ ˈtjub/ (say .kathohd ray tyoohb) noun Electronics a vacuum tube in which is generated a focused beam of electrons which can be deflected by electric and/or magnetic fields. The terminus of the beam is visible as a spot or line of… …  

• Plan position indicator — The plan position indicator (PPI), is the most common type of radar display. The radar antenna is usually represented in the center of the display, so the distance from it and height above ground can be drawn as concentric circles. As the radar… …   Wikipedia

• electronic horizontal situation indicator — A cathode ray tube (CRT)–based horizontal situation indicator (HSI) that forms part of an electronic flight instrument system (EFIS) …   Aviation dictionary

• plan-position indicator — noun (radar) An apparatus in which the position of reflecting objects is shown on the screen of a cathode ray tube, as if on a plan (abbrev PPI) • • • Main Entry: ↑plan …   Useful english dictionary

• plan position indicator — A cathode ray tube on which radar returns are so displayed as to bear the same relationship to the transmitter as the objects giving rise to them …   Military dictionary

• plan position indicator — A cathode ray tube (CRT) on which radar returns are displayed. The returns on the PPI are oriented relative to the transmitter …   Aviation dictionary

• lubberline — lubber line also lub·ber s line (lŭbʹərz) n. A line or mark on a mariner s compass or cathode ray indicator that represents the heading of a ship or aircraft. * * * …   Universalium

• CRI — China Radio International (Business) * Color Rendering Index (Computing » General) * Christian Research Institute (Community » Religion) * Cancer Research Institute (Community » Non Profit Organizations) * Chronic Renal Insufficiency (Medical »… …   Abbreviations dictionary

• radar — /ray dahr/, n. 1. Electronics. a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns. 2. a means or sense of awareness or… …   Universalium

• List of vacuum tubes — This is a list of vacuum tubes or thermionic valves. Before the advent of semiconductor devices, hundreds of tube types were used in consumer and industrial electronics; today only a few types are still used in specialized applications. Contents… …   Wikipedia