Thomas Alfa Edison

Thomas Alfa Edison was born on February 11^th, 1847 in Milan, Ohio. He was the seventh and last child of Samuel and Nancy Edison. He was a poor student. When a schoolmaster called him “addled”, his mother took him out of the school and proceeded to teach him at home. At an early age, he showed a fascination for mechanical things and for chemical experiments.

The first great invention developed by Edison was a phonograph. It could record and reproduced sound. He suggested other uses for the phonograph, such as: letter writing, dictation, music boxes, clock and record conversation from telephone.

In 1879, he improved the light bulb from a 50 year old idea. At that time, a number of people had work on and developed forms of electric lighting. But nobody had been developed for home use. After one and half year work, he finally an incandescent lamp which was burned for thirteen and a half hours.