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binary prefixes

Overview page. Subjects: Computing — Physics.

A set of prefixes for binary powers designed to be used in data processing and data transmission contexts. They were suggested in 1998 by the International Electrotechnical Commission (IEC)...

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CANNON, Paul Stephen (<i>born</i> 1953), Professor of Radio Science and Systems, University of Birmingham, since 2013

in Who's Who

P ublished online November 2015 .

Reference Entry. Subjects: History of Science and Technology; History of Engineering and Technology; Computing; Physics; Social and Cultural History; Education; Organization and Management of Education. 200 words.

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cathode-ray tube

Overview page. Subjects: Physics — Computing.

(CRT)

A display device in which a beam of electrons (cathode rays), emitted by an electron gun, is focused and deflected to a series of specific positions on the phosphor-coated...

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caustic

Overview page. Subjects: Computing — Physics.

(in optics) The curve or surface formed by the reflection of parallel rays of light in a large-aperture concave mirror. The apex of the caustic lies at the principal focus of the mirror....

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CERN

Overview page. Subjects: Computing — Physics.

(Conseil Européen pour la Recherche Nucléaire)

The European Organization for Nuclear Research, which is situated close to Geneva in Switzerland and is supported by a number of...

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COLLINS, Brian Stanley (<i>born</i> 1945), Professor of Engineering Policy, University College London, since 2011

in Who's Who

P ublished online November 2015 .

Reference Entry. Subjects: History of Science and Technology; History of Engineering and Technology; Computing; Engineering and Technology; Physics; Social and Cultural History; Education; Organization and Management of Education; Political History; Politics; State and Local Government. 195 words.

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demodulation

Overview page. Subjects: Computing — Physics.

The process of extracting the information from a modulated carrier wave (see modulation; radio). The device used is called a demodulator or a detector.

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digital camera

Overview page. Subjects: Computing — Physics.

A form of camera in which film is replaced by a semiconductor CCD array, which records the picture and stores it within the camera in a (usually) replaceable memory module. Often a viewing...

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distributive law

Overview page. Subjects: Computing — Physics.

The mathematical law stating that one operation is independent of being carried out before or after another operation. For example, multiplication is distributive with respect to addition...

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echo

Overview page. Subjects: Computing — Physics.

1 The reflection of transmitted data back to its source (or, as a verb, to reflect transmitted data back to its source). For example, characters typed on the keyboard of a data...

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