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:
“See, I have given you authority to tread on snakes and scorpions, and over all the power of the enemy; and nothing will hurt you. Nevertheless, do not rejoice at this, that the spirits submit to you, but rejoice that your names are written in heaven.”
—Bible: New Testament, Luke 10:19,20.
“People ask me: “Why do you write about food, and eating, and drinking? Why don’t you write about the struggle for power and security, and about love, the way the others do?”... The easiest answer is to say that, like most other humans, I am hungry.”
—M.F.K. Fisher (1908–1992)
“He has served me too well; by increasing my power he has stolen it away: he is now my subject only so long as he pleases.”
—Pierre Corneille (1606–1684)