A coil with an iron core is called an electromagnet. The iron core increases the coil’s magnetic field strength. A simple electromagnet is made by coiling wire around an iron nail. An iron core ...

Learn how forces deep underground generate a protective bubble between us and space.

That’s quite a big gap, as it turns out. It covers fields from gigantic bodies like the Sun and Earth, as well as those ...

“The electric and magnetic fields at a material’s atomic level determine its bulk properties and behavior, and are an essential area of research,” says Toshiaki Tanigaki, a senior researcher ...

A perfectly preserved ancient tree fossil offered scientists an unprecedented view into a moment 42,000 years ago when the ...

While technically not an electromagnet, it is possible to build ... The coil is fed with AC. The magnetic field from the coil induces an opposite field in the copper ring that is out of phase ...

Earth's magnetic field occasionally bursts into song — but these compositions are written with electromagnetic radiation, not ...