The average Hackaday reader likely knows, at least in the academic sense, what a magnetic field looks like. But as the gelatinous orbs in our skull can perceive only a tiny fraction of the EM ...

A magnetic field is invisible, but it can be detected using a magnetic compass. A compass contains a small bar magnet on a pivot so that it can rotate. The compass needle points in the direction ...

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. Earth’s orbit is absolutely littered with space junk, and every new rocket we send ...