Thomas Edison. Thomas Alva Edison 18471931 American inventor, listening to a recording on his phonograph. This is an electric model powered by a bichromate cell left, a form of wet battery. Engraving c1895. Editorial Stock Photo - Afloimages
Thomas Alva Edison (1847-1931) American inventor, listening to a recording on his phonograph. This is an electric model powered by a bichromate cell (left), a form of wet battery. Engraving c1895.