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:
“...men give us most rarely that which we really want, not favor, but—Justice. Nothing is easier than to coax them to pet us like children, nothing more difficult than to persuade them to treat us like responsible human beings.”
—Frances Power Cobbe (1822–1904)
“Great statesmen seem to direct and rule by a sort of power to put themselves in the place of the nation over which they are set, and may thus be said to possess the souls of poets at the same time they display the coarser sense and the more vulgar sagacity of practical men of business.”
—Woodrow Wilson (1856–1924)
“The piety of the Hebrew prophets purges their grossness. The circumcision is an example of the power of poetry to raise the low and offensive.”
—Ralph Waldo Emerson (1803–1882)