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:
“We know that madness belongs to love,—what power to paint a vile object in hues of heaven.”
—Ralph Waldo Emerson (1803–1882)
“There is a power in love to divine another’s destiny better than that other can, and, by heroic engagements, hold him to his task.”
—Ralph Waldo Emerson (1803–1882)
“My great panacea for making society at once better and more enjoyable would be to cultivate greater sincerity.”
—Frances Power Cobbe (1822–1904)