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 only power deserving the name is that of masses, and of governments while they make themselves the organ of the tendencies and instincts of masses.”
—John Stuart Mill (1806–1873)
“In what does the objective measure of value lie? In the quantum of enhanced and organized power alone, in accordance with what occurs in all occurrence, a will to increase.”
—Friedrich Nietzsche (1844–1900)
“Who can measure the advantages that would result if the magnificent abilities of these women could be devoted to the needs of government, society and home, instead of being consumed in the struggle to obtain their birthright of individual freedom? Until this be gained we can never know, we can not even prophesy the capacity and power of women for the uplifting of humanity.”
—Susan B. Anthony (1820–1906)