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:
“It never was in the power of any man or any community to call the arts into being. They come to serve his actual wants, never to please his fancy.”
—Ralph Waldo Emerson (1803–1882)
“It is in this power of saying everything, and yet saying nothing too plainly, that the perfection of art ... consists.”
—John Ruskin (1819–1900)
“Failure or success seem to have been allotted to men by their stars. But they retain the power of wriggling, of fighting with their star or against it, and in the whole universe the only really interesting movement is this wriggle.”
—E.M. (Edward Morgan)