A little over a year ago we’d written about a sub $100 muon detector that MIT doctoral candidate [Spencer Axani] and a few others had put together. At the time there was little more than a paper on ...

Metal detectors allow you to search for treasure, coins, lost items and historical artifacts buried beneath the surface. The three groups who most enjoy metal detecting are history buffs, collectors ...

Why would you want to detect metal? Oh, I don't know … maybe you want to find some gold in the ground. You could dig up ALL the dirt, or you could find the location that has the gold before you dig.