How did Edison invent the phonograph?

Answer 1

This was a tin foil phonograph. The phonograph played cylinders and not disks which led to his discovery that he could playback messages via this invention.

Answer 2

Edison invented the phonograph by experimenting with ways to record sound. He developed a method with a stylus that could etch sound waves onto a tinfoil cylinder, which could then be played back by running a stylus over the indented sound waves. This revolutionary invention laid the foundation for modern audio recording technology.