WHAT ARE MAJOR INVENTIONS OF THOMAS ALVA EDISON

 FEW KEY INVENTIONS OF EDISON:

1)PHONOGRAPH
A machine that could record the spoken voice and play it back.

2)LIGHT BULB
Edison made a light bulb that lasted for many hours.

3)MOTION PICTURE CAMERA
A Camera that could make films.

4)SYSTEM OF WIRELESS TELEGRAPH
A machine for giving signals between trains and stations for co-ordination.

5)FLUOROSCOPE
A machine that uses x-rays to take pictures of the internal structure of our body parts.  

6)ELECTRICITY DISTRIBUTION SYSTEM   
It provided electric current to consumers.

7)CARBON TELEPHONE
Transmitters.

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