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.