Thomas Alva Edison

Thomas Edison Inventions: What Did He Invent? thomas edison Since telegraphers not only sent and received messages but had to keep the equipment running, Edison learned a lot about practical electricity-- thomas edison Thomas Alva Edison original sound - Peppy ✨ น อ ก ตำ ร า

thomas jefferson During the telephone experiments, Edison noticed a faint recording This led him and his team to invent the phonograph