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:
“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)
“By my soul I swear
There is no power in the tongue of man
To alter me.”
—William Shakespeare (1564–1616)
“With an eye made quiet by the power
Of harmony, and the deep power of joy,
We see into the life of things.”
—William Wordsworth (1770–1850)