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:
“When power becomes gracious and descends into the visible—such descent I call beauty.”
—Friedrich Nietzsche (1844–1900)
“The reward of one duty is the power to fulfil another.”
—George Eliot [Mary Ann (or Marian)
“All in all, punishment hardens and renders people more insensible; it concentrates; it increases the feeling of estrangement; it strengthens the power of resistance.”
—Friedrich Nietzsche (1844–1900)
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