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:
“Knowing does not always allow us to prevent, but at least the things that we know, we hold them, if not in our hands, but at least in our thoughts where we may dispose of them at our whim, which gives us the illusion of power over them.”
—Marcel Proust (1871–1922)
“It has been the struggle between privileged men who have managed to get hold of the levers of power and the people in general with their vague and changing aspirations for equality, for justice, for some kind of gentler brotherhood and peace, which has kept that balance of forces we call our system of government in equilibrium.”
—John Dos Passos (1896–1970)
“The imagination is man’s power over nature.”
—Wallace Stevens (1879–1955)