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14:35
BFO Metal Detector on breadboard step by step guide
This video shows BFO Metal Detector components position on breadboard. 00:00 ~ 01:17 - Bre...
published: 17 Sep 2014
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5:39
Metal Detecting for Gold Nuggets with a Minelab GPX 5000 Metal Detector
Hello All, In this video I'm metal detecting with a Minelab GPX 5000 up a small handstacke...
published: 15 Apr 2013
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31:02
Garrett AT Pro Metal Detector Review & Depth Test
A quick look at the Garrett AT Pro. I've had this machine for a good while now and thought...
published: 13 Nov 2014
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8:10
El detector de mentiras
La verdad duele, pero en este caso la mentira más. COPIA Y PEGA ESTO Y ENVÍASELO A ALEX U...
published: 10 Feb 2015
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15:15
My Metal Detector Finds A WW2 Machine Gun!!!!! (74)
Imagine the shock of detecting in the woods and finding a WW2 Machine Gun!! What a great d...
published: 03 Oct 2012
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22:47
HOW TO BUILD THE GOLDFINDER XTR METAL DETECTOR - PART 1 (Circuit, shaft and control housing)
Take the quiz if you wish, or skip and only watch video. Interactive, Tutorial style, vide...
published: 13 Sep 2013
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3:13
Metal Detector con Sorpresa!!!
...quando capitano spazzolate come queste, puoi gridare davvero SON SODDISFAZIONI!!!!........
published: 13 Oct 2014
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14:03
Detector de metais
testando garrett ace 250 na areia seca...
published: 20 Nov 2013
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6:16
Detector de metais - Guarujá 2013
...
published: 11 Aug 2013
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33:23
What's the Best Radar Detector?
We review the best detectors on the market as of Jan 2015. We cover the Max2, Redline, V1...
published: 03 Jan 2015
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6:31
Best Beach Metal Detector, How To Choose a Beach Metal Detector
http://AmericanBeachDetecting.com presents a look at five of the best metal detectors for ...
published: 04 Aug 2013
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10:45
Detector de Metais como fazer passo a passo (introdução)
Como prometido fis o passo a passo para qual quer pessoa, até mesmo um leigo consiga faze...
published: 23 Feb 2014
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4:03
Introducing Minelab's SDC 2300; Minelab creates the world's best metal detector
Minelab creates the worlds best metal detectors and the world's best metal detector Minela...
published: 23 May 2014
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7:11
WTF - Lie Detector Hand Zapper
We found a lie detector test that zaps your hand if you're lying, so we decide to put each...
published: 12 Jul 2014
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28:54
HOMEMADE METAL DETECTOR ~ Simple & Sensitive(Schematic)
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published: 18 Jan 2015
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Sometiendo a Niños a un Detector de Mentiras
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published: 20 Dec 2014
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5:17
Detector de Metal
Compre seu Detector de Metais com nossa Equipe - Email para contato simonassi007@hotmail.c...
published: 14 Mar 2013
author: depspace1
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4:41
[ENG] 150225 Weekly Idol: Jackson and Youngji (Jackji) Lie Detector Cut
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published: 25 Feb 2015
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16:57
My Top 10 Most Outrageous Maury Lie Detector Results
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published: 06 Dec 2014
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7:00
GAY DETECTOR - UN GAY IN CLASSE
ATTENZIONE questa è comicità demenziale. Non intendiamo ledere la sensibilità o la figura ...
published: 15 Apr 2013
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2:49
The Lie Detector Test
►Giveaway: https://www.youtube.com/watch?v=2ZFK9ZKHHYk ►Follow Me On Twitter: https://twit...
published: 04 Jan 2015
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55:04
EL DETECTOR DE SPAWNS!! #KARMALAND | 12
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published: 17 Aug 2014
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5:28
DETECTOR DE MENTIRAS! (Desafio Chocante)
WOOOW #DetectorDeFenom ➤ ESTOU NUMA ILHA: http://bit.ly/PerdidoNaIlha ➤ NOVA SÉRIE: http...
published: 24 Jan 2015
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A sensor (also called detector) is a converter that measures a physical quantity and converts it into a signal which can be read by an observer or by an (today mostly electronic) instrument. For example, a mercury-in-glass thermometer converts the measured temperature into expansion and contraction of a liquid which can be read on a calibrated glass tube. A thermocouple converts temperature to an output voltage which can be read by a voltmeter. For accuracy, most sensors are calibrated against known standards.

Sensors are used in everyday objects such as touch-sensitive elevator buttons (tactile sensor) and lamps which dim or brighten by touching the base. There are also innumerable applications for sensors of which most people are never aware. Applications include cars, machines, aerospace, medicine, manufacturing and robotics.

A sensor is a device which receives and responds to a signal. A sensor's sensitivity indicates how much the sensor's output changes when the measured quantity changes. For instance, if the mercury in a thermometer moves 1 cm when the temperature changes by 1 °C, the sensitivity is 1 cm/°C (it is basically the slope Dy/Dx assuming a linear characteristic). Sensors that measure very small changes must have very high sensitivities. Sensors also have an impact on what they measure; for instance, a room temperature thermometer inserted into a hot cup of liquid cools the liquid while the liquid heats the thermometer. Sensors need to be designed to have a small effect on what is measured; making the sensor smaller often improves this and may introduce other advantages. Technological progress allows more and more sensors to be manufactured on a microscopic scale as microsensors using MEMS technology. In most cases, a microsensor reaches a significantly higher speed and sensitivity compared with macroscopic approaches.




This page contains text from Wikipedia, the Free Encyclopedia - http://en.wikipedia.org/wiki/Sensor

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