Top GK Quiz Answer Description
Thomas Alva Edison is born in 1847 to an exiled Canadian political activist and a school teacher. An attack of scarlet fever starts deterioration in his hearing that will eventually leave him nearly deaf as an adult. A hyperactive pupil, his mother pulls him out of school and educates him at home. ...
Often that was Western Union Telegraph Company, the industry leader, but just as often, it was one of Western Union's rivals. In one such instance, Edison devised for Western Union the quadruplex telegraph, capable of transmitting two signals in two different directions on the same wire, ...
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