Capacitors are tiny components found in almost every electronic device, but most people have no idea what they do. This video ...

Gold nanorods are promising photocatalysts that can use light energy to drive chemical reactions—such as converting CO₂ into ...

Discover how to make a DIY hand-powered mobile phone charger using simple materials such as two small DC motors and a piece of cardboard. This step-by-step tutorial covers mounting the motors, wiring ...