Discover how to build a hand-powered water pump that also generates electricity to light up LEDs using everyday recycled ...

The Tesla turbine is a bladeless centripetal-flow turbine invented by Nikola Tesla in 1913, using the boundary-layer effect ...

A good generator can save the day when the power goes out—but if it’s set up wrong, all that money you spent might as well have gone to waste. The truth is, most generator problems don’t come from the ...