The disease was a new obsession: a frustratingly simple mechanical game called the 15-puzzle. Still familiar today, it consists of a four-by-four grid in which you slide 15 numbered tiles around, ...

This video explains how magnets work and how magnetic fields are generated by the movement of electric charges. Magnetic materials influence and interact with current, motion, and force, making them ...

Particle accelerators are often framed as exotic machines built only to chase obscure particles, but they are really precision tools that use electric fields and magnets to steer tiny beams of matter ...