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:
“Our drives are reducible to the will to power. The will to power is the ultimate fact at which we arrive.”
—Friedrich Nietzsche (1844–1900)
“With all of my power of living
I am forced to lie on the floor.”
—John Ashbery (b. 1927)
“Whatever woman may cast her lot with mine, should any ever do so, it is my intention to do all in my power to make her happy and contented; and there is nothing I can imagine, that would make me more unhappy than to fail in the effort.”
—Abraham Lincoln (1809–1865)