Twentieth century inventions, a forecastLongmans, Green, and Company, 1901 - 286 páginas |
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Página 23
... the steam - engine . Lord Kelvin , in the year 1881 , briefly , but very significantly , classified the sources of power available to man under the five primary headings of tides , food , fuel , wind , NATURAL POWER . 23.
... the steam - engine . Lord Kelvin , in the year 1881 , briefly , but very significantly , classified the sources of power available to man under the five primary headings of tides , food , fuel , wind , NATURAL POWER . 23.
Página 24
... wind may be utilised to generate mechanical energy through the agency of windmills and other contrivances . The tides as a source of useful power have hardly yet begun to make their influence felt , and indeed the possibility of largely ...
... wind may be utilised to generate mechanical energy through the agency of windmills and other contrivances . The tides as a source of useful power have hardly yet begun to make their influence felt , and indeed the possibility of largely ...
Página 25
... wind does in raising the surface - waves , but reckoning only that part of the ocean energy which might conceivably be made available for service it is safe to calculate that the waves offer between two and three thousand times as much ...
... wind does in raising the surface - waves , but reckoning only that part of the ocean energy which might conceivably be made available for service it is safe to calculate that the waves offer between two and three thousand times as much ...
Página 26
... Wind - power , again , has been to a large ex- tent neglected since the advent of the steam- engine . The mightiest work carried out in any European country in the early part of the present century was that which the Dutch people most ...
... Wind - power , again , has been to a large ex- tent neglected since the advent of the steam- engine . The mightiest work carried out in any European country in the early part of the present century was that which the Dutch people most ...
Página 27
George Sutherland. tition with the handy and always convenient steam - engine . The wind bloweth " where it listeth , " but only at such times and seasons as it listeth , and its vagaries do not suit an employer whose wages list is ...
George Sutherland. tition with the handy and always convenient steam - engine . The wind bloweth " where it listeth , " but only at such times and seasons as it listeth , and its vagaries do not suit an employer whose wages list is ...
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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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