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:
“What you fail to understand is the power of hate. It can fill the heart as surely as love can.”
—Earl Felton, and Richard Fleischer. Captain Nemo (James Mason)
“Quintilian [educational writer in Rome about A.D. 100] hoped that teachers would be sensitive to individual differences of temperament and ability. . . . Beating, he thought, was usually unnecessary. A teacher who had made the effort to understand his pupil’s individual needs and character could probably dispense with it: “I will content myself with saying that children are helpless and easily victimized, and that therefore no one should be given unlimited power over them.””
—C. John Sommerville (20th century)
“It is probable that the principal credit of miracles, visions, enchantments, and such extraordinary occurrences comes from the power of imagination, acting principally upon the minds of the common people, which are softer.”
—Michel de Montaigne (1533–1592)