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:
“What breadth, what beauty and power of human nature and development there must be in a woman to get over all the palisades, all the fences, within which she is held captive!”
—Alexander Herzen (1812–1870)
“It does not follow ... that the right to criticize Shakespeare involves the power of writing better plays. And in fact—do not be surprised at my modesty—I do not profess to write better plays.”
—George Bernard Shaw (1856–1950)
“You don’t have power if you surrender all your principles—you have office.”
—Ron Todd (b. 1927)