The Phonograph

How it works:

- Developed: by trying to improve the telegraph + the telephone

- A needle is attached to the diaphragm (the part in the telephone that vibrates when voice hits it)

- To record voice or music: the needle moves up and down based on the vibrations of the voice or music and makes indents in a piece of paper

- Later, tin foil replaced the paper as a recording material, and then wax, and then vinyl (records)

How it changed society:

- Invented by Thomas Edison in 1877

- It marks the beginning of the recording industry