Maglev Trains: Floating on Magnets
Trains that fly at 300mph without touching the ground. Superconductors, Electromagnets, and the future of friction-less travel.
Speakers: How They Make Sound (Reverse Microphones)
A speaker is just a microphone working backwards. It uses magnets to push air. Motors work the exact same way.
Wireless Chargers: Magic Electricity
How does your phone charge without a wire? Induction. Understand the physics of magnetic fields and why we don't use it for robots (yet).