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:
“It is only a short step from exaggerating what we can find in the world to exaggerating our power to remake the world. Expecting more novelty than there is, more greatness than there is, and more strangeness than there is, we imagine ourselves masters of a plastic universe. But a world we can shape to our will ... is a shapeless world.”
—Daniel J. Boorstin (b. 1914)
“The wise man should withdraw his soul within, out of the crowd, and keep it in freedom and power to judge things freely; but as for externals, he should wholly follow the accepted fashions and forms.”
—Michel de Montaigne (1533–1592)
“When petty people get into power they consider themselves unexcelled in the world.”
—Chinese proverb.