METALDETECTOR
Metal detector
A metal detector is a portable electronic instrument which detects the presence of metal nearby. Metal detectors are useful for finding metal inclusions hidden within objects, or metal objects buried underground. They often consist of a handheld unit with a sensor probe which can be swept over the ground or other objects. If the sensor comes near a piece of metal this is indicated by a changing tone in earphones, or a needle moving on an indicator. Usually the device gives some indication of distance; the closer the metal is, the higher the tone in the earphone or the higher the needle goes. Another common type are stationary "walk through" metal ...The above text is a snippet from Wikipedia: Metal detector
and as such is available under the Creative Commons Attribution/Share-Alike License.
metal detector
Noun
- A hand-held device that uses electromagnetic induction to detect buried metal.
- A structure, similar to a doorway, through which people pass; an alarm is sounded if the person is carrying a metal object, as this may indicate a weapon.
The above text is a snippet from Wiktionary: metal detector
and as such is available under the Creative Commons Attribution/Share-Alike License.