How many things did thomas Edison study?

Answer 1

Thomas Edison studied a wide range of subjects throughout his life, including electricity, telegraphy, and sound recording. He was particularly focused on practical applications of science and technology, experimenting with materials and processes to develop inventions like the phonograph, light bulb, and motion pictures. While it's difficult to quantify the exact number of things he studied, his diverse interests and prolific experimentation spanned numerous fields within science and engineering.