Phonograph

device · 1877 · Electric age

Recording and playing sound on a cylinder (Edison).

Inventor: Thomas Edison.

What it is made of

• Diaphragm — has part. A diaphragm with a needle.
• Horn — has part. A horn.

Principles and materials it uses

• Sound wave — uses. It records sound vibrations as a groove.
• Tin — is made of. The recording is on tin foil.
• Brass — is made of. The movement is brass.

History: what it evolved from and what it influenced

• Electrical telegraph — was inspired by. Edison came to the phonograph while working on recording telegraph and telephone signals.
• Gramophone — evolved into. A flat disc instead of a cylinder.

Take Phonograph apart

Open Evothings