Yet the discovery of the electromagnetic waves that underpin ... if you hold a magnet near an iron nail the magnet seems to pull the nail immediately. You can’t see or hear or feel anything ...

1m length of insulated wire, iron nail, a variable low voltage ... Wind the insulated wire tightly around the nail to make an electromagnet. Set up the equipment as shown in the diagram.

According to the Law of Conservation of Energy, we cannot create or destroy energy, but we can change its form. That means we can transmit energy great distances in its electrical form and, when ...

but we can look past the distorted proportions of this Iron Man Mark II because it’s the first Stark figure we’ve found that actually flies. Or floats, at least, thanks to an electromagnetic ...

It won’t turn you into Tony Stark—or Robert Downey Jr—but it will power the electromagnet in your heart, protecting you from all that shrapnel. Just eight bucks, but check Matt’s video on it.