(Encyclopedia)
CE5
Ignition system
ignition, apparatus for igniting a combustible mixture. The German engineer Nikolaus A. Otto, in his first gas engine, used flame ignition; another method was…
(Encyclopedia) truck, automotive vehicle designed primarily for the transportation of goods. A truck is constructed on the general lines of the automobile but uses larger and heavier parts. It may be…
(Encyclopedia)
CE5
Internal-combustion engines: In the four-stroke reciprocating engine (above), a mixture of fuel and air is taken into the chamber on the down-stroke of the piston, is compressed…
(Encyclopedia) crane, hoisting machine for lifting heavy loads and transferring them from one place to another, ordinarily over distances of not more than 200 ft (60 m). Cranes have a long reach and…
(Encyclopedia) YaroslavlYaroslavlyərəsläˈvəl [key], city (1991 est. pop. 640,000), capital of Yaroslavl region, E European Russia, on the upper Volga River. It is a river port, a major rail junction…
Source: Association of American Railroads. Web: www.aar.org .1797The steam locomotive is invented in England. 1823The first public railway in the world opens in England.1827The first railroad in…
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FOR IMMEDIATE RELEASE FOR MORE INFORMATION Stephanie Pesce Learning Network 617.542.6500 ext. 1168stephanie.pesce@fen.com David Conti Learning Network 617.542.6500 ext…
(Encyclopedia) motorboating, sport of navigating a motor-powered vessel on the water. It is done on either fresh- or saltwater and may be competitive or recreational. The first successful motorboat…
(Encyclopedia) pile, post of timber, steel, or concrete used to support a structure. Vertical piles, or bearing piles, the most common form, are generally needed for the foundations of bridges, docks…
(Encyclopedia) snorkel, tube through which a submarine or diver can draw air while underwater. When in use, the top of the snorkel tube extends above the water surface into the air. The first…
