Andrews, Ernest John, 1863-, Howland, Howard Newell, 1865- joint author · New York, London, The Macmillan company · leaf 180
p w Fig. 71. §§280-281] HEAT AND WORK 165 engine, a common form of which is sliown in full in Fig.72. Gas-engines are made in various styles and for dif-ferent combustible gases and liquids. They are veryefficient and convenient, but are limited in power. … Fig. 72. 281. steam-engines. — The most useful machine forperforming work by means of heat is the steam-engine,with which nearly every one is more or less familiar. Theprinciple involved in the steam-engine is somewhat similar
Physics
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