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 ...

If you purchase an independently reviewed product or service through a link on our website, Rolling Stone may receive an affiliate commission. Metal detectors used to be really bulky, heavy machines, ...

Armed with metal detectors, curious explorers are finding historical objects every day. For example, Bob Podhrasky, COO, senior vice president, and director of engineering at metal detector ...