A while ago I bought this non-contact metal detector module from an online store to see how it functions, and what I need to build it. The cheap module I received from China had no instruction manual ...

Don’t kid yourself: You’ve probably always wanted a metal detector. After seeing them in so many movies and television shows, and maybe even hobbyists at the beach using one, maybe it’s about time you ...

The metal detector circuit shown here must represent the limits of simplicity for a metal detector, yet the design works surprisingly well. It uses just one 40106 hex Schmitt inverter IC, a capacitor ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, strange science, and anything out of the ordinary. While you're walking around you don't ...

While you're walking around you don't notice it, but muons are passing through your body at the rate of about 10,000 muons per minute. These fermions, identical in most respects to electrons except ...