detector, sensor, sensing element(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
rectifier that extracts modulation from a radio carrier wave
electronic equipment that detects the presence of radio signals or radioactivity
A device capable of registering a specific substance or physical phenomenon.
Smoke detectors are mandatory in public buildings.
one who, or that which, detects; a detecter
Origin: [L., a revealer.]
A detector is a device that recovers information of interest contained in a modulated wave. The term dates from the early days of radio when all transmissions were in Morse code, and it was only necessary to detect the presence of a radio wave using a device such as a coherer without necessarily making it audible. A more up-to-date term is demodulator, but "detector" has a history of many decades of use, even if it is a misnomer.
The Standard Electrical Dictionary
A portable galvanometer, often of simple construction, used for rough or approximate work.
The numerical value of detector in Chaldean Numerology is: 7
The numerical value of detector in Pythagorean Numerology is: 9
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