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 least one can say of power is that a vocation for it is suspicious.”
—Jean Rostand (1894–1977)
“There is a Restlessness springing from the consciousness of power not fully utilized, which must be present wherever there is unused power of whatever kind. This is the restlessness of the germ within the seed, struggling upward and downward towards its proper life. ... it is a striving full of pain, the cutting of tender flesh by the fetters of the captive as he struggles against their pitilessness.”
—Anna C. Brackett (1836–1911)
“Love prays. It makes covenants with Eternal Power in behalf of this dear mate.”
—Ralph Waldo Emerson (1803–1882)