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:
“Now different races and nationalities cherish different ideals of society that stink in each other’s nostrils with an offensiveness beyond the power of any but the most monstrous private deed.”
—Rebecca West (1892–1983)
“In the intellectual order, the virtue of humility is nothing more nor less than the power of attention.”
—Simone Weil (1909–1943)
“In making the great experiment of governing people by consent rather than by coercion, it is not sufficient that the party in power should have a majority. It is just as necessary that the party in power should never outrage the minority.”
—Walter Lippmann (1889–1974)