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

Have you ever found yourself suddenly in need of finding a small metal object hidden in the woods? No? Well, neither have we. But we can’t say the same thing for [zaphod], who’s family was hoping to ...

[mircemk] is quite a wizard when it comes to using coils of wires in projects, especially when their application is within easy-to-build metal detectors. There are all kinds of ways to send signals ...

For most of us, the fantasy of finding buried treasure faded away along with other childhood passions, like my youthful ambition to set a Guinness World Record for building the world’s largest pillow ...