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:
“The power we exert over the future behavior of our children is enormous. Even after they have left home, even after we have left the world, there will always be part of us that will remain with them forever.”
—Neil Kurshan (20th century)
“A new degree of intellectual power seems cheap at any price.”
—Ralph Waldo Emerson (1803–1882)
“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)