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:
“Democracy shows not only its power in reforming governments, but in regenerating a race of men—and this is the greatest blessing of free governments.”
—Andrew Jackson (1767–1845)
“We have grasped the mystery of the atom and rejected the Sermon on the Mount.... The world has achieved brilliance without wisdom, power without conscience. Ours is a world of nuclear giants and ethical infants.”
—Omar Bradley (1893–1981)
“How oft when men are at the point of death
Have they been merry! which their keepers call
A lightning before death: O, how may I
Call this a lightning? O my love! my wife!
Death, that hath sucked the honey of thy breath,
Hath had no power yet upon thy beauty:
Thou art not conquered; beauty’s ensign yet
Is crimson in thy lips and in thy cheeks,
And death’s pale flag is not advanced there.”
—William Shakespeare (1564–1616)