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 that I have on you is to spare you;
The malice towards you, to forgive you. Live,
And deal with others better.”
—William Shakespeare (1564–1616)
“What wouldst thou do, old man?
Think’st thou that duty shall have dread to speak
When power to flattery bows?”
—William Shakespeare (1564–1616)
“The obligation of subjects to the sovereign is understood to last as long, and no longer, than the power lasteth by which he is able to protect them.”
—Thomas Hobbes (1588–1679)