Discover how to build a simple electromagnetic motor and generator using everyday materials in this hands-on science ...

[Debraj] needed a simple signal generator for a project he was working on, but didn’t have one handy. He found that the easiest and cheapest way to get clean, reliable signaling was by using something ...

Discover how to harness the motion of a swinging pendulum to generate electricity and charge your smartphone in this hands-on DIY tutorial. Watch as a small electric motor is disassembled and ...