Greek word parts phon, photo, graph, tele

Sound.

An instrument that changes sound energy into electrical energy for transmitting or recording sound.

An earpiece held over the ear by a band worn on the head.

Light.

An electrical system for transmitting images with sound over a wire or through space.

To write or draw.

A message sent by telegraph.

A device that transmits sound over a distance using electrical signals.

A system for transmitting messages over long distances using coded signals.

Far or distant.