Add Yahoo as a preferred source to see more of our stories on Google. Years ago, the Insane Clown Posse proposed a thought-provoking question: Magnets, how do they work? Donald Trump's recent rant at ...

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.

Warnings about magnets and gadgets have been passed down like tech folklore, often without much explanation. The reality is more nuanced: some electronics are genuinely vulnerable to magnetic fields, ...