If you need help visualizing magnetic fields, these slow-motion video captures should educate or captivate you. Flux lines are difficult to describe in words, because magnet shape and strength ...

For nearly a decade, the American Association of Physics Teachers (AAPT) has been working to bring together resources through ...

The magnetic barrier that protects Earthlings from radiation almost collapsed some 565 million years ago. Here’s what saved ...

When an electric current passes through a metal wire, a magnetic field forms around that wire (see diagram at right). Likewise, a wire passing through a magnetic field creates an electric current ...

If these metals have not been turned into a permanent magnet they will still be attracted to a magnet if placed within a magnetic field. In this situation they act as a magnet - but only whilst in ...

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 ...

We're all familiar with MRIs. MRI is magnetic. It's Magnetic Resonance Imaging. It's magnetic fields. And we know they're safe. Now, the same principles that apply to MRI have been actually ...

A new video shows how Earth's magnetic field weakened and warped before temporarily flipping during a recent "polar reversal event." When you purchase through links on our site, we may earn an ...