Transportation (DK Eyewitness Books)

Transportation (DK Eyewitness Books)

DK Publishing

Language: English

Pages: 74

ISBN: 2:00273577

Format: PDF / Kindle (mobi) / ePub

All new content. Eyewitness Transportation introduces readers to the world of trains, planes, automobiles, and more! We explore the world of transportation, and transportation around the world. From the origins of all manner of wagons, bicy

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cables, and they were used to carry only freight, since they were considered too dangerous for people to travel in. If the rope or cable broke, the elevator car would crash to the ground. In 1852, American engineer Elisha Otis invented the safety elevator. If the cable holding it up broke, the elevator car would not fall. At the 1854 New York World’s Fair, he demonstrated his machine by traveling in it while an assistant cut the cable holding it up. It did not fall because safety brakes locked

Lilienthal held glider up with his shoulders Wing made from stretched cotton Otto Lilienthal and his glider Internal combustion engine By the mid-19th century, vehicles driven by steam engines had been on the roads for almost 100 years. These carriages remained rare and unpopular, however, because their engines were bulky and inefficient, and they belched out thick, black smoke. In 1860, Belgian engineer Étienne Lenoir built a new type of engine that burned coal gas as fuel, and was small

propeller Combustion chamber is where fuel is ignited Turbine is driven by exhaust gases, and its spinning motion powers fan and compressor Heat shield prevents heat from exhaust gases from damaging turbine In a turboprop engine, the turbine (powered by the stream of hot gases from the combustion chamber) in turn powers a propeller at the front of the engine. It is the propeller alone that provides the forward thrust—not the stream of escaping exhaust gases. Turboprop engines power many small

carts would cut into it, forming deep ruts. This created a need for streets with harder surfaces. The oldest paved streets date from around 4000 bce, and have been found in the Sumerian city of Ur (in present-day Iraq). By 2600 bce, people were building paved streets in the cities of Harappa and Mohenjo-daro in the Indus Valley. Within a thousand years, paved roads became common in the Middle East and Greece. Some of these ancient streets survive to the present day. royal road In the 5th

which took place in Britain—the country where the Industrial Revolution was most advanced. Superheater feeds steam back through boiler tubes to convert any remaining water droplets to steam Pipe carries steam into piston cylinder Chimney carries exhaust gas away from engine rainhill trials In 1829, the Rainhill Trials were held to select a locomotive for the new Liverpool-Manchester Railway. Thousands of people from across England descended on a village called Rainhill to see the best designs

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