Twentieth century inventions, a forecastLongmans, Green, and Company, 1901 - 286 páginas |
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Página 13
... doubt makes his plans , as far as may be practicable , upon the system indicated by the humorist , who advises people never to prophesy unless they happen to know , but the nature of his knowledge is almost always to some extent removed ...
... doubt makes his plans , as far as may be practicable , upon the system indicated by the humorist , who advises people never to prophesy unless they happen to know , but the nature of his knowledge is almost always to some extent removed ...
Página 23
... doubt , be brought about very largely through the utilisation of Nature's waste energy in the service of mankind . Water- falls , after being very largely neglected for two or three generations , are now command- ing attention as ...
... doubt , be brought about very largely through the utilisation of Nature's waste energy in the service of mankind . Water- falls , after being very largely neglected for two or three generations , are now command- ing attention as ...
Página 24
... doubt . The relative advantages of reclaiming a given area of soil for purposes of cultivation , and of converting the same land into a tidal basin in order to generate power through the inward and outward flow of the sea - water , were ...
... doubt . The relative advantages of reclaiming a given area of soil for purposes of cultivation , and of converting the same land into a tidal basin in order to generate power through the inward and outward flow of the sea - water , were ...
Página 27
... doubt that , as Lord Kelvin remarked in the address already quoted , " the little thing wanted to let the thing be done is cheap windmills " . This , however , leads to another part of the problem . The costliness of the best modern ...
... doubt that , as Lord Kelvin remarked in the address already quoted , " the little thing wanted to let the thing be done is cheap windmills " . This , however , leads to another part of the problem . The costliness of the best modern ...
Página 34
... doubt must detract from the merits of such a wind - motor , judged simply on the basis of actual area of sail employed . But when the matter of cost alone is taken as the standard , the advantages are much more evenly balanced than they ...
... doubt must detract from the merits of such a wind - motor , judged simply on the basis of actual area of sail employed . But when the matter of cost alone is taken as the standard , the advantages are much more evenly balanced than they ...
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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 JOHN TYNDALL kind latter Lecturer LL.D lodes Lond machine machinery MAGNETISM Manual means mechanical ment metal methods miner mining motion motor natural naval nineteenth century numerous operation PHYSIOLOGY piano pipe Plates practically principle Professor progress pumping purposes R. A. PROCTOR 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 Woodcuts
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