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2. 7 Best Metal Detectors of 2023, Reviewed by Experts - AOL

   www.aol.com/7-best-metal-detectors-2023...

   The best metal detectors have a range of frequencies to detect different metals in different locations for a ... Vanquish 440 Multi-Frequency Pinpointing Metal Detector. amazon.com. $289.00. Minelab.

3. 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 ...

4. Long-range locator - Wikipedia

   en.wikipedia.org/wiki/Long-range_locator

   Long-range locator. A long-range locator is a class of fraudulent devices purported to be a type of metal detector, supposedly able to detect a variety of substances, including gold, drugs and explosives; most are said to operate on a principle of resonance with the material being detected.

5. Category:Metal detecting finds in Scotland - Wikipedia

   en.wikipedia.org/wiki/Category:Metal_detecting...

   Pages in category "Metal detecting finds in Scotland" The following 4 pages are in this category, out of 4 total. This list may not reflect recent changes. D.

6. Eddy-current testing - Wikipedia

   en.wikipedia.org/wiki/Eddy-current_testing

   Eddy current testing (ECT) as a technique for testing finds its roots in electromagnetism. Eddy currents were first observed by François Arago in 1824, but French physicist Léon Foucault is credited with discovering them in 1855. ECT began largely as a result of the English scientist Michael Faraday 's discovery of electromagnetic induction ...

7. Properties of metals, metalloids and nonmetals - Wikipedia

   en.wikipedia.org/wiki/Properties_of_metals...

   Its thermal conductivity (2,200 W/m•K) is five times greater than the most conductive metal (Ag at 429); 300 times higher than the least conductive metal (Pu at 6.74); and nearly 4,000 times that of water (0.58) and 100,000 times that of air (0.0224). This high thermal conductivity is used by jewelers and gemologists to separate diamonds from ...