Discover three creative DIY projects using everyday household items in this tutorial. Learn how to make a pen LED flashlight, a battery-powered electromagnet, and a simple smartphone stylus with easy- ...

Experts say Canada can't avoid engaging with US as Trump rattles NATO with insults 'Canada's got to be ready': Feds announce $307M contract for Canadian-made assault rifles Are we on the cusp of a ...

So, a homopolar generator is really simple, at least in concept. Get a conductive disk spinning inside a magnetic field and the axel & edge acrue a voltage differential. My question is, what kind of ...