A System of Natural Philosophy: in which are Explained the Principles of Mechanics, Hydrostatics, Hydraulics, Pneumatics, Acoustics, Optics ...: Illus. by Three Hundred EngravingsPratt, Woodford, and Company, 1853 - 408 sider |
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A System of Natural Philosophy: In which are Explained the Principles of ... John Lee Comstock Uten tilgangsbegrensning - 1854 |
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angle appear atmosphere attraction axis axle ball barometer battery called center of gravity centrifugal force circle colors concave consequently convergent convex lens convex mirror copper cylinder degrees direction distance Earth eclipse effect elastic electricity engine equal equator Explain Fig falling body feet fixed fluid focus force fulcrum glass heat hence hydrometer inclined plane instrument iron length lens lever machine magnet means mercury metal miles Moon motion move object orbit orifice parallax parallel particles pass pendulum perpendicular piece pipe piston planets plate poles pounds pressure principle produced proportion pulley pump quantity raised rays of light reflected reflecting telescope refracted represented by Fig respect retina revolution revolve rope round screw seen side specific gravity stars steam substances Suppose surface telescope thrown tion tube turned upward valve velocity vessel vibrations visual angle weight wheel wire zinc