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:
“What breadth, what beauty and power of human nature and development there must be in a woman to get over all the palisades, all the fences, within which she is held captive!”
—Alexander Herzen (1812–1870)
“In night when colours all to black are cast,
Distinction lost, or gone down with the light;
The eye—a watch to inward senses placed,
Not seeing, yet still having power of sight—
Gives vain alarums to the inward sense”
—Fulke Greville (1554–1628)
“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)