Résultats pour "Underground" dans Ingénierie

In the nineteenth century, Manhattan's streets were so choked with pedestrians, horses, vehicles, and vendors that a trip from City Hall to Central Park could take hours. Alfred Beach had the perfect solution: build a giant pneumatic tube underneath Broadway from the Battery to Harlem. Air pressure would shoot passengers up and down the island in clean, quiet carriages. But Beach was up against the operators of the horse-drawn streetcars and the politicians in their pay, most conspicuously William M. Tweed, the notorious "Boss" of Tammany Hall.

The technology underground is a thriving, humming, and often literally scintillating subculture of amateur inventors and scientific envelope-pushers who dream up, design, and build machines that whoosh, rumble, fly—and occasionally hurl pumpkins across enormous distances. In the process they...