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:
“There is never a beginning, there is never an end, to the inexplicable continuity of this web of God, but always circular power returning into itself.”
—Ralph Waldo Emerson (1803–1882)
“You are evil. But even the power of evil cannot stand against the power of faith and goodness.”
—Griffin Jay, and Randall Faye. Lew Landers. Lady Jane Ainsley (Frieda Inescort)
“It is in this power of saying everything, and yet saying nothing too plainly, that the perfection of art ... consists.”
—John Ruskin (1819–1900)