Metal Detectors Overview
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Why waste time reading a lot other resources when this article contains everything you have been looking for?
The metal detector is a very useful tool. They are used by the military for things such as de-mining a mine field, by airports and other security checkpoints to keep airplanes and other areas safe, by geophysical prospectors to discover the metal content of certain rocks, and by old fashioned beach-combers and treasure hunters. Metal detectors are also part of the whole detector radar family, which includes radar detectors, car radar detector systems, weather radar systems, and just about anything to do with cordless radar systems. This is because many detectors employ the use of radar technology as well.
Metal detectors are made up of an oscillator that produces an alternating current that passes through a coil, which creates an alternating magnetic field. This means that when an electronically conductive metal is near the detector, it creates eddies of air, which causes a change in the magnetic field, which enables the operator to see where the metal is.
Handheld detectors are the most common, and are used in the majority of cases. Even land mines can be detected through the use of handheld devices. However, for really deep metals, ground penetrating radar is used in conjunction with the metal detector to unearth the hidden metal.
The origins of the metal detector are remarkable. The first metal detectors were created in the late 19th century. The purpose for these detectors was to make finding ore easier. However, the early detectors were difficult to use and took a lot of battery power. In those days, the German physicist Heinrich Wilhelm Dove invented the induction balance system, which took a hundred years to be seen as useful for metal detecting. The first detectors to model the current format emerged in the 1930's. Gerhard Fisher patented the first modern metal detector. He discovered metal detecting through a malfunction of his radio navigational system. His model was used in World War two to find land mines but after the war, people came up with new ways to use the metal detector, and the hobby was born.
Metal detectors are a rather exciting tool. They are among some of the most useful and common tools used today. Most people have seen at least one in their life, and it is hard to imagine never coming into contact with one. The metal detector is considered part of the detector radar family, because many detectors use the ground penetrating radar system to find deeply hidden metals. The history of the metal detector is also an interesting subject, and is something to think about while standing in those long security checkpoint lines.
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Metal Detectors News:
Metal Detectors News:
| Gone in 12 minutes: Frisking drive at rly station ends in fiasco Hordes of impatient commuters knocked down the metal detectors and trampled over them to catch the train home EUR.. | ||
Metal Detectors in Schools? Recently local school boards have been grappling with questions about whether or not to utilize metal detectors as a means of promoting school safety. This has become a controversial topic. Advocates for metal detectors in schools ... | ||
Oakland's Cole Middle School to use metal detectors - Alameda Times-Star
| ||
The Center for "B-Science" Peer Review: Many Uses of Metal Detectors Schools everywhere are using metal detectors to help filter out violence. The metal detectors can very easily (for this is why they are used) detect a knife or gun. Police stations and Airports use them as well. ... | ||
Stuyvesant to Install Metal Detectors--Nerd Alerts Likely (Gothamist) Officials at Stuyvesant High School told parents that they want to install metal detectors , but not because of concern that students are bringing weapons to school. The prestigious public high school simply wants to catch students who are breaking the Department of Education's ban on cellphones and are using them to text each other test answers. Principal Stanley Teitel said that the ... | ||
PR Newswire - Paradigm Tactical Products to be Largest Distributor of Metal/Radiation Detection Wands in United States October 23, 2008 -- GEORGETOWN, Mass., Oct. 23 /PRNewswire-FirstCall/ -- Paradigm Tactical Products Inc. (Pink Sheets: PDGT.PK), a leading provider of detection... | ||
E. Haven High opens with metal detectors - Hartford Courant
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Build Your Own Metal Detector: Easy & Cheap The widespread use of metal detectors to pursue hobbies by people has resulted in the EURBuild your own metal detector phenomenon. The use of metal detectors is vital in public places, correctional facilities, public events and airports, ... | ||
High school puts metal detectors to the test (New Haven Register) EAST HAVEN EUR Everything went smoothly at East Haven High School Wednesday, the first day with four metal detectors installed in the schools front entry hall, officials said... | ||
Business Wire - Det-Tronics Introduces Ultra-Fast H2S Gas Detector October 22, 2008 -- NTMOS Sensor Uses Nanotechnology in a Metal Oxide Semiconductor (MOS) Sensor to Save Lives MINNEAPOLIS -- Detector Electronics Corporation... | ||
Stuyvesant to Install Metal Detectors--Nerd Alerts Likely - Gothamist
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Portable detectors on track to beat knife crime - Aberdeen Press and Journal
| ||
Taj Bengal frisks employees, uses metal detectors - Indian Express
| ||
Philadelphia Inquirer, The - Jury selection proceeds in Fort Dix case October 8, 2008 -- Amid heightened security - including two rows of large, water-filled orange barriers in front of the federal courthouse and the presence of a parked... | ||
Big Day, Big Crowds, Big Price Tag (New York Times) The inauguration of President-elect Barack Obama will put an unusual strain on local resources in Washington... | ||
Investigators Clear EHHS But Firearms Still Missing - TheDay
| ||
E. Haven High opens with metal detectors (Boston Globe) Metal detectors are being used at East Haven high school following the arrest of two students on weapons charges... | ||
Metal detectors, bag checks and school kids - The Education Report . 7 Responses to EURMetal detectors, bag checks and school kidsEUR. John Says: November 24th, 2008 at 7:19 pm. District Spokesman Troy Flint: EURThe success or failure of this initiative will probably have an impact on whether we expand this ... | ||
Threat results in temporary metal detectors at Courthouse (Stevens Point Journal) A threat to use violence against a family member during a court proceeding resulted in a temporary metal detector for about four hours Tuesday morning at the Portage County Courthouse, Sheriff John Charewicz said. He said there was no danger to the public, and officials knew of the threat Monday. Charewicz described the threat as an empty threat, and said if the department receives information ... | ||
Police use metal detectors for safer body searches (ic CheshireOnline) POLICE in Halton are carrying metal detectors to root out concealed weapons. A Cheshire Police spokesman said that not all officers carry the devices which are usually used to target specific events such as Creamfields. They are also used when reports indicate a suspect may be armed... | ||
Oakland's Cole Middle School to use metal detectors after recent gun scare (Oakland Tribune) Stepped-up security measures, including metal-detection wands and bag checks, soon will be in place at a local middle school in which a gun recently discharged in a classroom, causing no injuries... | ||
Evening Chronicle (Newcastle, England) - Bars to get metal detectors; BOUNCERS TO USE BODY SCANNERS TO FIND KNIVES November 8, 2008 -- Byline: By KERRY WOOD POLICE are giving bouncers metal detectors in a knife crime crackdown. Pub-goers will be electronically frisked on nights... | ||
| Gone in 12 minutes: Frisking drive at rly station ends in fiasco Hordes of impatient commuters knocked down the metal detectors and trampled over them to catch the train home EUR.. | ||
Metal Detectors in Schools? Recently local school boards have been grappling with questions about whether or not to utilize metal detectors as a means of promoting school safety. This has become a controversial topic. Advocates for metal detectors in schools ... | ||
Oakland's Cole Middle School to use metal detectors - Alameda Times-Star
| ||
The Center for "B-Science" Peer Review: Many Uses of Metal Detectors Schools everywhere are using metal detectors to help filter out violence. The metal detectors can very easily (for this is why they are used) detect a knife or gun. Police stations and Airports use them as well. ... | ||
Stuyvesant to Install Metal Detectors--Nerd Alerts Likely (Gothamist) Officials at Stuyvesant High School told parents that they want to install metal detectors , but not because of concern that students are bringing weapons to school. The prestigious public high school simply wants to catch students who are breaking the Department of Education's ban on cellphones and are using them to text each other test answers. Principal Stanley Teitel said that the ... | ||
PR Newswire - Paradigm Tactical Products to be Largest Distributor of Metal/Radiation Detection Wands in United States October 23, 2008 -- GEORGETOWN, Mass., Oct. 23 /PRNewswire-FirstCall/ -- Paradigm Tactical Products Inc. (Pink Sheets: PDGT.PK), a leading provider of detection... | ||
E. Haven High opens with metal detectors - Hartford Courant
| ||
Build Your Own Metal Detector: Easy & Cheap The widespread use of metal detectors to pursue hobbies by people has resulted in the EURBuild your own metal detector phenomenon. The use of metal detectors is vital in public places, correctional facilities, public events and airports, ... | ||
High school puts metal detectors to the test (New Haven Register) EAST HAVEN EUR Everything went smoothly at East Haven High School Wednesday, the first day with four metal detectors installed in the schools front entry hall, officials said... | ||
Business Wire - Det-Tronics Introduces Ultra-Fast H2S Gas Detector October 22, 2008 -- NTMOS Sensor Uses Nanotechnology in a Metal Oxide Semiconductor (MOS) Sensor to Save Lives MINNEAPOLIS -- Detector Electronics Corporation... | ||
Stuyvesant to Install Metal Detectors--Nerd Alerts Likely - Gothamist
| ||
Portable detectors on track to beat knife crime - Aberdeen Press and Journal
| ||
Taj Bengal frisks employees, uses metal detectors - Indian Express
| ||
Philadelphia Inquirer, The - Jury selection proceeds in Fort Dix case October 8, 2008 -- Amid heightened security - including two rows of large, water-filled orange barriers in front of the federal courthouse and the presence of a parked... | ||
Big Day, Big Crowds, Big Price Tag (New York Times) The inauguration of President-elect Barack Obama will put an unusual strain on local resources in Washington... | ||
Investigators Clear EHHS But Firearms Still Missing - TheDay
| ||
E. Haven High opens with metal detectors (Boston Globe) Metal detectors are being used at East Haven high school following the arrest of two students on weapons charges... | ||
Metal detectors, bag checks and school kids - The Education Report . 7 Responses to EURMetal detectors, bag checks and school kidsEUR. John Says: November 24th, 2008 at 7:19 pm. District Spokesman Troy Flint: EURThe success or failure of this initiative will probably have an impact on whether we expand this ... | ||
Threat results in temporary metal detectors at Courthouse (Stevens Point Journal) A threat to use violence against a family member during a court proceeding resulted in a temporary metal detector for about four hours Tuesday morning at the Portage County Courthouse, Sheriff John Charewicz said. He said there was no danger to the public, and officials knew of the threat Monday. Charewicz described the threat as an empty threat, and said if the department receives information ... | ||
Police use metal detectors for safer body searches (ic CheshireOnline) POLICE in Halton are carrying metal detectors to root out concealed weapons. A Cheshire Police spokesman said that not all officers carry the devices which are usually used to target specific events such as Creamfields. They are also used when reports indicate a suspect may be armed... | ||
Oakland's Cole Middle School to use metal detectors after recent gun scare (Oakland Tribune) Stepped-up security measures, including metal-detection wands and bag checks, soon will be in place at a local middle school in which a gun recently discharged in a classroom, causing no injuries... | ||
Evening Chronicle (Newcastle, England) - Bars to get metal detectors; BOUNCERS TO USE BODY SCANNERS TO FIND KNIVES November 8, 2008 -- Byline: By KERRY WOOD POLICE are giving bouncers metal detectors in a knife crime crackdown. Pub-goers will be electronically frisked on nights... | ||
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