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:
“Compared to other parents, remarried parents seem more desirous of their child’s approval, more alert to the child’s emotional state, and more sensitive in their parent-child relations. Perhaps this is the result of heightened empathy for the child’s suffering, perhaps it is a guilt reaction; in either case, it gives the child a potent weapon—the power to disrupt the new household and come between parent and the new spouse.”
—Letty Cottin Pogrebin (20th century)
“Immediately aware that power had gone forth from him, Jesus turned about in the crowd and said, “Who touched my clothes?””
—Bible: New Testament, Mark 5:30.
“The power of lying is much less than the power of “what is not to be discussed.””
—Mason Cooley (b. 1927)