New PDF release: Urban Mass Transit: The Life Story of a Technology

By Robert C. Post

ISBN-10: 0313085196

ISBN-13: 9780313085192

ISBN-10: 0313339163

ISBN-13: 9780313339165

This quantity within the Greenwood Technographies sequence covers city mass transit - that's, the applied sciences that let towns to maneuver huge numbers of individuals round. quite a few hundred years in the past, the dimensions of towns used to be constrained by the point it took humans to maneuver from one a part of the town to a different. the improvement of successive applied sciences has endlessly altered the city panorama. From horse-drawn omnibuses to subways to present light-rail, this quantity highlights the technological and social struggles that experience followed urbanization and the necessity for an effective and within your budget technique of transportation in towns.

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Extra resources for Urban Mass Transit: The Life Story of a Technology (Greenwood Technographies)

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But the history of technology is full of evidence that invention is easy compared to the process of rendering an invention practical in economic terms. Or even easier than conceiving that it might have a practical use. The reference to “electric shocks” in the compressed-air prospectus is suggestive. ELECTRICAL PIONEERS In 1799 Alessandro Volta (1745–1827) discovered that electric current was “excited by the mere contact of conducting substances of different kinds,” what came to be called electrodes and electrolytes.

ELECTRICAL PIONEERS In 1799 Alessandro Volta (1745–1827) discovered that electric current was “excited by the mere contact of conducting substances of different kinds,” what came to be called electrodes and electrolytes. This was the basis of the electric battery. Twenty years later, Hans Christian Oersted (1777–1851) discovered that a magnetic needle was deflected at right angles to a wire carrying an electric current, and in 1820 Andr´e Marie Amp´ere (1775– 1836) described the “mutual interaction” between current-carrying wires.

Within a short time, he also had electric streetcars operating in Scranton, Pennsylvania, and Appleton, Wisconsin. These lines were frequently shut down for repairs, however, whereas Daft had managed to keep an electric railway in Baltimore in continuous operation for more than a year. LEO DAFT AND THE BALTIMORE UNION P A S S E N G E R R A I L WAY In addition to his knowledge of electrical technology, Daft had the practical sensibility of a successful businessman, having operated an electrical manufacturing and supply business in Greenville, New Jersey, since 1881.

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Urban Mass Transit: The Life Story of a Technology (Greenwood Technographies) by Robert C. Post

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