Lesson Chemical Energy: Need a light? Use potato power! With this science experiment for kids, learn how chemical reactions take place between two dissimilar metals and how to create voltage. This is a classic STEM activity that's sure to please :)
Lewis Howard Latimer, patented a method for making carbon filaments, allowing light bulbs to burn for hours instead of minutes. Latimer also drafted drawings that helped Alexander Graham Bell receive a patent for the telephone.
Thomas Alva Edison – American inventor and entrepreneur, sitting with his favorite and most original invention: the Phonograph (shown here is a second prototype). Photographed by Mathew Brady in Washington, April
Thomas Edison: Thomas Alva Edison was an American inventor and businessman. He developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and a long-lasting, practical electric light bulb.