Thomas Edison

He quotes “there is no

substitute for hard work”

What he invented.

The quadruplex telegraph

Incandescent light bulb

Phonograph cylinder

Carbon microphone

Movie camera

The Incandescent Light bulb

The incandescent light bulb is an

electric Light that makes light with a

wire filament that gets heated by

electricity to a high temperature until

it gl0ws

The quadruplex Telegraph

• The Quadruplex telegraph is a type

of electric telegraph which allows a

total of four separate signals to be

transmitted and received on a single

wire at a time (two signals in each

direction)

The Phonograph Cylinder

• Phonograph cylinders are the first

commercial medium for recording

and producing sound. Commonly

know as “records” In their era of

Greatest popularity (1986-1915)

Carbon Microphone

• The Carbon microphone is a type of microphone, a transducer that converts sounds into a electrical audio System.

Movie Camera (motion Picture

Camera)

• motion-picture camera: a camera

that takes a sequence of

photographs that can give the

illusion of motion when viewed in

rapid succession

References.

• Google Images • Wikipedia• YouTube

By Riley