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2. Metal detector - Wikipedia

   en.wikipedia.org/wiki/Metal_detector

   A metal detector is an instrument that detects the nearby presence of metal. Metal detectors are useful for finding metal objects on the surface, underground, and under water. A metal detector consists of a control box, an adjustable shaft, and a variable-shaped pickup coil. When the coil nears metal, the control box signals its presence with a ...

3. List of metal detecting finds - Wikipedia

   en.wikipedia.org/wiki/List_of_metal_detecting_finds

   This is a list of historically significant items found by metal detecting method, only excluding magnet fishing finds, since magnet fishing is usually considered a distinctively different and separate hobby from traditional metal detecting.

4. Rapiscan Systems - Wikipedia

   en.wikipedia.org/wiki/Rapiscan_Systems

   Rapiscan Systems. Rapiscan Systems is an American privately held company that specialises in walk-through metal detectors and X-ray machines for screening airport luggage and cargo. The company is owned by OSI Systems. [1] The company headquarters, in Torrance, California, USA, is the primary location for research and development, engineering ...

5. Metal detectorists stumble across 1,000-year-old Viking ...

   www.aol.com/news/metal-detectorists-stumble...

   Divers Find 130-Year-old Shipwreck With Intriguing Past Hidden In Lake Michigan. A view of a set of five coins from a rare hoard of 1,000-year-old silver coins unearthed during metal detecting in ...

6. Prospecting - Wikipedia

   en.wikipedia.org/wiki/Prospecting

   Prospecting is the first stage of the geological analysis (followed by exploration) of a territory. It is the search for minerals, fossils, precious metals, or mineral specimens. It is also known as fossicking. Traditionally prospecting relied on direct observation of mineralization in rock outcrops or in sediments.

7. Geiger counter - Wikipedia

   en.wikipedia.org/wiki/Geiger_counter

   The sound of a geiger counter. A Geiger counter (/ ˈɡaɪɡər /, GY-gər; [ 1 ] also known as a Geiger–Müller counter or G-M counter) is an electronic instrument used for detecting and measuring ionizing radiation. It is widely used in applications such as radiation dosimetry, radiological protection, experimental physics and the nuclear ...