In a metal like copper, however, the outer electrons swim around freely and are shared by all the atoms. That’s why ...

Consumer-grade metal detectors can help you discover everything from buried treasure to loose change or hidden wiring. Many people enjoy spending hours sweeping over beaches or abandoned property in ...

Metal detecting is a fun pastime, even when all you can find is a little bit of peace and a whole lot of pop tabs. [Huygens Optics] has a VLF-based metal detector that offers much more feedback than ...

A metal detector used to be an entirely analogue instrument, an oscillator whose frequency changed with the inductance of its sense coil when a piece of metal approached. [Łukasz Podkalicki] shows us ...

What To Consider in a Metal Detector Before we talk about how to pick a metal detector, we should quickly explain how they work. Consumer metal detectors have a round head known as the "search coil," ...

So, you've binged a few treasure-hunting shows and now you're wondering if your own old detector in the garage can find you a pirate chest. One of the first questions that may pop up in your head ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Whether stashed by Captain Kidd or as a plot point in The Goonies, buried treasure has a certain allure ...

Although smartphones can perform many tasks on their own, they're also able to make devices such as drones, robots and cameras cheaper and/or more capable by acting as their "brains." One of the ...

This homemade metal detector circuit will help you find objects composed of materials with relatively high magnetic permeability. It is not suitable for buried coins discovery that is not sensitive ...

Editor's Note: October 8th, 2025: We've checked to make sure that our recommendations are still available and competitively priced. A new round of metal detector testing is currently under way, so you ...