The New Book of KnowledgeGrolier, 1986 - 21 sider An illustrated encyclopedia containing over 9,000 articles on history, literature, art and music, geography, myths and legends, mathematics, science, hobbies, holidays and festivals, games, sports, crafts, medicine, law, government, industry, politics, and other topics. |
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Side 118
... steam iron may be used. A steam iron has a tank of water inside it. This tank has a special valve that lets the water drip onto the upper surface of the hot bottom, or sole, of the iron. The steam that is formed escapes through holes in ...
... steam iron may be used. A steam iron has a tank of water inside it. This tank has a special valve that lets the water drip onto the upper surface of the hot bottom, or sole, of the iron. The steam that is formed escapes through holes in ...
Side 209
... STEAM ENGINES Some 1,800 or 1,900 years ago a Greek named Hero of Alexandria invented a steam engine. This engine consisted of a hollow metal ball mounted on tubes rising from a boiler. Steam from the boiler passed into the ball and ...
... STEAM ENGINES Some 1,800 or 1,900 years ago a Greek named Hero of Alexandria invented a steam engine. This engine consisted of a hollow metal ball mounted on tubes rising from a boiler. Steam from the boiler passed into the ball and ...
Side 210
... steam in a separate chamber outside the cylinder. Watt later invented a way to make the steam push the piston both up and down. The engine then worked much faster. The Steam Engine Principle All steam engines work for the same reason: steam ...
... steam in a separate chamber outside the cylinder. Watt later invented a way to make the steam push the piston both up and down. The engine then worked much faster. The Steam Engine Principle All steam engines work for the same reason: steam ...
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American ancient animals atoms became become began beginning building built called carry cause century changes charge chemical church cities common developed direction early earth East eggs electric electrons elements energy engine England English Europe European example experiment explosives fish flow follow force France give grow heat houses important Indian industry iron Islands Italy John keep kind king known land language later learned light lines live magnet materials means metal motor mountains move natural needed North ocean organisms period plants plate plays produce River rock Roman rule schools scientists sometimes surface tests things tion turn United usually waves wire writing wrote