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:
“With all of my power of living
I am forced to lie on the floor.”
—John Ashbery (b. 1927)
“Thy blood and virtue
Contend for empire in thee, and thy goodness
Share with thy birthright! Love all, trust a few,
Do wrong to none. Be able for thine enemy
Rather in power than use, and keep thy friend
Under thy own life’s key. Be checked for silence
But never taxed for speech.”
—William Shakespeare (1564–1616)
“I have agreed to go into the service for the war ... [feeling] that this was a just and necessary war and that it demanded the whole power of the country; that I would prefer to go into it if I knew I was to die or be killed in the course of it, than to live through and after it without taking any part in it.”
—Rutherford Birchard Hayes (1822–1893)