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{{mergeto|Sensor}}
{{wiktionary|detector}}
A '''[[detector]]''' is a device capable of registering a specific substance or physical phenomenon.
A '''detector''' is a device that detects or measures some phenomenon or stimulus, and produces some signal in response. More generally, the term may be applied to biological organs that perform a similar function. The eye for example converts the energy of those photons reaching the retina into electrical signals which are further processed by the brain.


'''Detector''' may also refer to:
In an [[Amplitude modulation|AM radio]] receiver, a "detector" is a [[electrical network|circuit]] or device that recovers the [[Signal (information theory)|signal]] of interest from the modulated wave. This device is usually based on a [[diode]], which converts the (usually pre-amplified) incoming high-frequency (many kHz) AC signal into a "DC" (low frequency AC) signal. The latter has [[noise]] remaining, but its [[Envelope_detector | envelope]] is the required audio frequency output. In a [[Frequency modulation|FM radio]], a circuit called a [[discriminator]] is used to convert [[frequency]] variations to amplitude variations.


* [[Detector (radio)]], a device that recovers information from a modulated wave
[[Category:Detectors| ]]
* [[Detector (film)|''Detector'' (film)]], a 2000 Norwegian film
[[Category:Radio electronics]]
* [[USS Detector|USS ''Detector'']], two United States Navy ships
[[Category:Measuring instruments]]
** {{USS|Detector|AMc-75}}, was a [[coastal minesweeper]] launched 29 May 1941
** {{USS|Detector|AM-429}}, was a minesweeper launched 5 December 1952

{{disambiguation}}

Latest revision as of 10:27, 27 February 2013

A detector is a device capable of registering a specific substance or physical phenomenon.

Detector may also refer to: