Word: mostly
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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...
With the Declaration, Jefferson gave the Enlightenment its most eloquent and succinct political expression. He lifted the human race into a higher orbit.
In 1926 the philosopher Alfred North Whitehead wrote, "The greatest invention of the 19th century was the invention of the method of invention." That method, Whitehead added, "has broken up the foundations of the old civilization." Thomas Alva Edison never thought of himself as a revolutionary; he was a hardworking...
Either alone or as the supervisor of his research teams, Edison amassed more than 1,000 patents, including one for the movie camera. That invention alone would have ensured his lasting renown, but it was only one of the many contributions Edison made to the now ubiquitous technological environment. He...