Word: ands
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Dates: during 1990-1999
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Fortunately for him, America during the post-Civil War boom of the 1870s was famished for faster and more reliable ways of doing business. An improvement Edison made in the stock ticker eventually earned him $40,000, a considerable sum at the time. He used this windfall to set up...
Edison's tireless work habits took shape during his childhood in Port Huron, Mich. His formal education, according to most accounts, lasted only three months; he quit school after a teacher pronounced him "addled." His mother, herself a former teacher, educated him for a while at home, but the boy...
His first patent, for an electric vote recorder, taught him a lesson that would guide the rest of his career. There was no demand, at the time, for electric vote recorders, and his device earned him nothing. Edison vowed never again to invent something unless he could be sure it...
Other candidates for this honor soon abounded. Edison was working on a problem in telegraphy in 1877 when he noticed that a stylus drawn rapidly across the embossed symbols of the Morse code produced what he later described as "a light, musical, rhythmical sound, resembling human talk heard indistinctly." If...
Edison is commonly called the inventor of the light bulb. In truth, he and his co-workers accomplished far more than that. In 1879 they created an incandescent lamp with a carbonized filament that would burn for 40 hours, but a working laboratory model was only the first step. How...