Power
From its inception, the subway used trolleys powered by electricity from overhead lines, made possible by the invention of the trolley pole in 1880 by Frank J. Sprague. However, the modern line has been pantograph-only since the trolley wires were modified in the 1990s.
Read more about this topic: Tremont Street Subway
Famous quotes containing the word power:
“A state that denies its citizens their basic rights becomes a danger to its neighbors as well: internal arbitrary rule will be reflected in arbitrary external relations. The suppression of public opinion, the abolition of public competition for power and its public exercise opens the way for the state power to arm itself in any way it sees fit.... A state that does not hesitate to lie to its own people will not hesitate to lie to other states.”
—Václav Havel (b. 1936)
“In what does the objective measure of value lie? In the quantum of enhanced and organized power alone, in accordance with what occurs in all occurrence, a will to increase.”
—Friedrich Nietzsche (1844–1900)
“When there is sympathy, there needs but one wise man in a company and all are wise,—so, a blockhead makes a blockhead of his companion. Wonderful power to benumb possesses this brother.”
—Ralph Waldo Emerson (1803–1882)