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How does a metal detector works?

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Anonymous

16y ago
Updated: 8/16/2019

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Common metal detectors work by sending out a radiofrequency energy signal. This frequency will change slightly when the 'antenna' is in close proximity of various metals.

Many metals will absorb this energy. The detector notices this absorption and can these days indicate what metal it is and even the distance to the metal.

Some metals also reflect this energy signal and when a reflection is picked up, this can also be used to indicate type and size of metal object.

High tech detectors use a combination of many methods of which increases its accuracy drastically.

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Wiki User

13y ago

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