After a year of trial and error, Liyang Chen had managed to whittle down a metallic wire into a microscopic strand half the width of an E.coli bacterium — just thin enough to allow a trickle of ...

The battery as we know it today was an invention of Italian chemist and physicist Alessandro Volta. He witnessed electricity splitting water into its constituent elements of oxygen and hydrogen and ...

Electroacupuncture involves passing a low-frequency electrical current through traditional acupuncture needles. It may help relieve pain and other symptoms. Electroacupuncture is a variation of ...