DETECTOR • DICTIONARY ONE.COM • Definition of Detector

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/dɪtˈɛktər/ Listen

Detector

noun

Any device that receives a signal or stimulus (as heat or pressure or light or motion etc.) and responds to it in a distinctive manner. Synonyms: sensing element, sensor.

Rectifier that extracts modulation from a radio carrier wave. Synonym: demodulator.

Electronic equipment that detects the presence of radio signals or radioactivity.

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"Detector" Quotes from Famous Books

... detected. The story had become so popular, that he thought it should be investigated[1194]; and in this research he was assisted by the Reverend Dr. Douglas[1195], now Bishop of Salisbury, the great detector of impostures; who informs me, that after the gentlemen who went and examined into the evidence were satisfied of its falsity, Johnson wrote in their presence an account of it, which was published in the newspapers and Gentleman's Magazine, and ...

— Life Of Johnson, Vol. 1 • Boswell, Edited by Birkbeck Hill

... both wireless masts were broken down. Watson and Kennedy managed to repair and re-erect one of the masts, but it was only thirty-seven feet in height. Any final hopes of hearing wireless signals were dispelled by the discovery that the case containing the detector and several other parts necessary for a receiving-station ...

— The Home of the Blizzard • Douglas Mawson

... as simple as possible. Six new dry cells were to be taken to provide current. Then there were a spark-gap, a spark-coil, a key, and a detector, with the receiving set, switch, and aerial. To be sure, the entire aerial was not packed, but merely the wires and insulators, as spreaders could be made in the forest. Then there was an additional coil of wire to be used for lead-in and suspension wires. No tuning ...

— The Young Wireless Operator--As a Fire Patrol - The Story of a Young Wireless Amateur Who Made Good as a Fire Patrol • Lewis E. Theiss

... cried the Judge, bringing down his yellow fist upon the 'Bank Note Detector'. "I'll make you a lawyer, sir. But my methods ain't Harvard ...

— The Crossing • Winston Churchill

... is my fortune, that I must repent to be iust? This is the Letter which hee spoake of; which approues him an intelligent partie to the aduantages of France. O Heauens! that this Treason were not; or not I the detector ...

— The First Folio [35 Plays] • William Shakespeare