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Television, a wild extrapolation on the Edison effect, made its debut at the 1939 World’s Fair in New York.

Here, the Edison effect was put to good use once again: Vacuum tubes could be lined up to shoot off and record positive and negative charges in a programmed sequence to add columns of numbers at the speed of electrons; in other words, as fast as anything is physically capable of moving. 

The phenomenon was given the name “the Edison effect.”

His one discovery in basic science�the "Edison effect," the emission of electrons from a heated electric conductor�led eventually to the creation of the electronics industry. which has given the world radio, television, computers, radar and other marvels.

"Out of a multitude of labor savers and world-beaters—and world savers, too!—to be credited to Mr. Edison, it is impossible to mention more than these: "The quadruplex telegraph system for sending four messages—two in each direction—at the same time; the telephone carbon transmitter; the phonograph; the incandescent electric light and complete system; magnetic separator; Edison Effect now used in Radio bulbs; giant rock crushers; alkaline storage battery; motion picture camera.