The four transparent chips are beautiful works ... square resistor with multiple contacts around the perimeter. When a magnetic field is applied, some of the electrons are deflected, and with ...

[Peter] is currently working on a new version of his pocket-sized science tricorder, and he figured visualizing magnetic fields would be cool. This led to what can only be described as a camera ...

A magnetic field is invisible, but it can be detected using a magnetic compass. A compass contains a small bar magnet on a pivot so that it can rotate. The compass needle points in the direction ...