This persnickety number determines the strength of magnetic fields. It figures in everything from motors and generators to audio speakers. Oh, and without it we’d live in eternal darkness.

“After driving an electric vehicle for several months as a rideshare driver, I’ve lost a lot of leg hair!” This is one of the most common comments in discussions about the “radiation and health” ...

A recent study published inScience Advances reveals that a temporary collapse of Earth’s magnetic field, known as the ...

New computer simulations suggest the first magnetic fields that emerged after the Big Bang were much weaker than expected — ...

The early Universe hosted ultra-weak magnetic fields that still shaped cosmic structures. New simulations establish stricter limits on their strength. Magnetic fields that originated during the earlie ...

The researchers traced the subtle influence of "primordial magnetic fields" on the cosmic web, the vast, filamentary ...