794 terms
Photonics Dictionary: C
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cathode rays -> cathode streamAlso known as cathode rays. Formerly, this term described a stream of electrons emitted from the cathode of a gas-discharge tube during its bombardment by positive ions. It also describes any stream...
cathode sputteringThe method of disintegrating the substance of the cathode by bombarding it with ions and depositing it on another electrode or electron tube envelope.
cathode streamAlso known as cathode rays. Formerly, this term described a stream of electrons emitted from the cathode of a gas-discharge tube during its bombardment by positive ions. It also describes any stream...
cathode-coupled amplifierA cascade amplifier that uses a common cathode resistor to couple energy from stage to stage.
cathode-ray graphic displayA cathode-ray tube, driven by a computer, that receives impulses of information from the computer and displays it in a series of lines, circles, curves or other graphic forms to be viewed by the user.
cathode-ray oscilloscope -> oscilloscopeA system in which a supplied signal causes the deflection of the electron beam in a cathode-ray tube, thus forming a visible trace on the phosphor screen of the tube and providing for examination of...
cathode-ray outputA term used in data processing to describe a cathode-ray tube that displays graphic or character data.
cathode-ray tube deflection planeA plane that lies at right angles to the tube axis that has the deflection center.
cathode-ray tube envelopeEnvelopes for cathode-ray tubes are made by blowing glass in the same manner as light bulbs. They have a fairly flat end face to carry the phosphor material applied internally.
cathode-ray tube faceplateA fiber optic end plate constructed by drawing a bundle of parallel fibers embedded in glass and cutting it into thin slices. These slices are assembled in a plane and heated to produce a...
cathode-ray tube grid -> Wehnelt cylinderAlso known as cathode-ray tube grid or shield. A cylindrically shaped electrode that, containing the cathode of a cathode-ray tube with opposite potential, is designed to focus and control the...
cathode-ray tube lensA high-quality, narrow-angle lens of high aperture designed for low magnification in the recording of cathode-ray tube images.
cathode-ray tube patternThe luminous trace formed on the cathode-ray tube screen by the motion of the electron beam.
cathode-ray tube shield -> Wehnelt cylinderAlso known as cathode-ray tube grid or shield. A cylindrically shaped electrode that, containing the cathode of a cathode-ray tube with opposite potential, is designed to focus and control the...
cathode-ray tubeA vacuum tube with an electron gun at one end and a fluorescent screen at the other. Electrons emitted from a heated filament are accelerated by a series of annular anodes at progressively higher...
cathodic etching -> vacuum etchingAlso known as cathodic etching. Surface etching achieved by bombarding an evacuated surface with gas ions.
cathodoluminescenceLight produced when a metal is bombarded with high-velocity electrons causing small amounts of the metal to vaporize and emit radiation. Also known as electronoluminescence.
cationAn ion carrying a positive charge and thus attracted to the cathode during electrolysis.
catoptric lightLight that is directed or focused by means of curved reflective surfaces.
catoptric systemAn optical system in which the only image-forming elements are curved-surface mirrors; e.g., a Cassegrain lens system.
CATVcommunity antenna television
Cauchy formula -> dispersion formulaAll formulas that present the index of refraction as a function of a wavelength of electromagnetic radiation. Also called dispersion equation, Cauchy formula, Hartmann formula.
causticA surface that envelops a bundle of rays or bundle of normals to the wave surface. It may be observed as a hollow, luminous cusp in a turbid medium.
CAVconstant angular velocity
cavityIn a laser, the optical resonator formed by two coaxial mirrors, one totally and one partially reflective, positioned so that laser oscillations occur.
cavity dumpingA Q-switch method that can result in extreme pulse shortening.
CBEMAComputer and Business Equipment Manufacturers' Association
cBncubic boron nitride
CBRchemical, biological, radiological
CCcubic convolution
cccubic centimeters
CCDcharge-coupled device
CCD cameraA CCD camera, or charge-coupled device camera, is a type of digital camera that utilizes a CCD image sensor to capture and record images. CCD cameras are widely used in various applications,...
CCD image sensorA CCD image sensor, or charge-coupled device image sensor, is a type of electronic device used to convert optical images into electronic signals. It is a key component in digital cameras, camcorders,...
CCD -> charge-coupled deviceA charge-coupled device (CCD) is a type of electronic image sensor used in various imaging devices, including digital cameras, camcorders, and scientific instruments. It consists of an integrated...
CCDSCenter for Commercial Development of Space
CCFMcryogenic continuous-film memory
CCIRComité Consultatif International des Radiocommunications
CCITTComité Consultatif International Telegraphique et Telephonique
CCLcontrolled commodities list
CCOcurrent-controlled oscillation
CCPcomputer-controlled polisher
CCPDcharge-coupled photodiode array
CCTcorrelated color temperature
CCTVclosed-circuit television
CCWcounterclockwise
cdcandela
CDcircular dichroism; compact disc
CD-ROM (compact disc read-only memory)An adaptation by Philips and Sony of their audio compact disc technology for optical disc data storage and retrieval. Current capacity of a disc is 0.5 to 0.6 gigabytes of information.
CD-ROMcompact disc read-only memory
Photonics DictionaryC