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:
“The struggle of man against power is the struggle of memory against forgetting.”
—Milan Kundera (b. 1929)
“International relations is security, it’s trade relations, it’s power games. It’s not good-and-bad. But what I saw in Yugoslavia was pure evil. Not ethnic hatred—that’s only like a label. I really had a feeling there that I am observing unleashed human evil ...”
—Natasha Dudinska (b. c. 1967)
“In the United States, though power corrupts, the expectation of power paralyzes.”
—John Kenneth Galbraith (b. 1908)