Thomas Edison and the calf mobile

Benjamin Franklin, Marconi, Gram Bell, the Wright brothers, George Washington Carver, the amazing Nikola Tesla, and a host of others…all important inventers. But perhaps the best known, Thomas Edison, was the most prolific of them all. Not only did he invent many products, but he also had an eye for inventions most usable to the public. He was a no-nonsense guy who disdained the scientist who…