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:
“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.
“My great panacea for making society at once better and more enjoyable would be to cultivate greater sincerity.”
—Frances Power Cobbe (1822–1904)
“Great is Truth, and mighty above all things.”
—Apocrypha. 1 Esdras, 4:41.
Acclamation following the speech of the bodyguard of King Darius, who proclaimed the power of truth, “the strength, kingdom, power, and majesty of all ages.”