including a simple metal detector circuit. It’s a very basic concept that uses a coil of copper wire as a home-made choke — when metal or a magnet comes near the coil, it varies the output ...

How to make a particle detector cloud chamber at home If your aim is to detect any old particles that happen to be passing through your kitchen, that's actually pretty easy. All you need to do is ...

The best metal detectors, including the Garrett Ace 300, make it easy and fun to uncover hidden ... making it an especially useful gadget to have in your home. The Garrett metal detector is ...