Twentieth century inventions, a forecastLongmans, Green, and Company, 1901 - 286 páginas |
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Página 42
... close to its effective face , and thus the momentum ac- quired by the one part before it impinges upon the other becomes comparatively small . The limit to which it may be practicable to multiply ratchets or toothed bands will , of ...
... close to its effective face , and thus the momentum ac- quired by the one part before it impinges upon the other becomes comparatively small . The limit to which it may be practicable to multiply ratchets or toothed bands will , of ...
Página 54
... close compres- sion , are also very grateful to men labouring hard at very great depths , where the heat from the country rock would become , in the absence of such artificial refrigeration , almost over- powering . For underground ...
... close compres- sion , are also very grateful to men labouring hard at very great depths , where the heat from the country rock would become , in the absence of such artificial refrigeration , almost over- powering . For underground ...
Página 59
... close upon a million foot- pounds , which is about the work done by a horse - power during the space of half an hour . This battery weighed very nearly 75 lb. It nevertheless represented an immense forward step in the problem of ...
... close upon a million foot- pounds , which is about the work done by a horse - power during the space of half an hour . This battery weighed very nearly 75 lb. It nevertheless represented an immense forward step in the problem of ...
Página 83
... close - fitting parts are required for the places upon which the line of force impinges will alter the conditions of the whole problem . In the centrifugal sand pump , as now largely used for raising silt from rivers and harbours , the ...
... close - fitting parts are required for the places upon which the line of force impinges will alter the conditions of the whole problem . In the centrifugal sand pump , as now largely used for raising silt from rivers and harbours , the ...
Página 84
... close - fitting parts , as in the ordinary suction or lift pump . By subjecting bones As an instance of the class of work for which gaseous jets , for driving turbines or similar forms of motor , may perform useful services the case of ...
... close - fitting parts , as in the ordinary suction or lift pump . By subjecting bones As an instance of the class of work for which gaseous jets , for driving turbines or similar forms of motor , may perform useful services the case of ...
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adopted already alternate current apparatus appliances application B.Sc BOTANY buoy cable calcium carbide carrying cheap CHEMISTRY collectivism College Coloured compressed air constructed convenient course Crown 8vo D.Sc Diagrams direction driving dynamo economical effect electric current electric lighting ELEMENTARY energy engine fact force future heat Hospital Illustrations improvement industrial INORGANIC CHEMISTRY invention inventor kind latter Lecturer LL.D lodes Lond Lord Kelvin machine machinery magnetic marine propulsion means mechanical ment metal method miner mining motion motor natural naval nineteenth century nitrogen numerous operation PHYSIOLOGY piano pipe Plates practically principle Professor progress pumping purposes rail railway render road Royal 8vo running sail Science screw shaft ship side speed station steam steam-engine steel storage battery STRENGTH OF MATERIALS suitable tank telegraphy TEXT-BOOK tion traction traction engines truck turbine twentieth century utilised ventilation vessel wave-power waves wheel wind windmill wire wireless Woodcuts
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