In a metal like copper, however, the outer electrons swim around freely and are shared by all the atoms. That’s why ...

The magnetic field gradient is the change in magnetic field strength over distance ... By adjusting the electric current ...

hysics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming tools ...

A groundbreaking new device uses electromagnetic levitation to help researchers gently sort living cells, with no need for ...

Magnetic graphene oxide sheets fold, move, sense motion, and switch function by swapping magnetic layers, offering a fast, reprogrammable platform for soft robots and other morphable structures.

A giant dent in Earth's magnetic field is continuing to expand, according to the latest data from a trio of satellites monitoring our world. It's called the South Atlantic Anomaly, stretching across ...

Geophysicists have modeled how Earth’s magnetic field could form even when its core was fully liquid. By removing the effects of viscosity in their simulation, they revealed a self-sustaining dynamo ...