Twentieth century inventions, a forecastLongmans, Green, and Company, 1901 - 286 páginas |
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Página 2
... constructing his first ap- paratus demonstrating the material and physical nature of those mysterious electric currents which his friend Professor Galvani of Bologna , who died just two years earlier , had at first as- cribed to a ...
... constructing his first ap- paratus demonstrating the material and physical nature of those mysterious electric currents which his friend Professor Galvani of Bologna , who died just two years earlier , had at first as- cribed to a ...
Página 28
... constructed by simply erecting a high windlass with arms bolted to the barrel at each end , making the shape of a rectangular cross . But those at one end are fixed in such positions that when viewed from the side they bisect the angles ...
... constructed by simply erecting a high windlass with arms bolted to the barrel at each end , making the shape of a rectangular cross . But those at one end are fixed in such positions that when viewed from the side they bisect the angles ...
Página 29
... generation of the electric current demands exactly the opposite class of conditions . We may therefore surmise that the windmill of the future , as constructed for the purposes of storing power , will have a NATURAL POWER . 29.
... generation of the electric current demands exactly the opposite class of conditions . We may therefore surmise that the windmill of the future , as constructed for the purposes of storing power , will have a NATURAL POWER . 29.
Página 31
... construct two spirals on uprights set in three holes in the ground , forming lines at right angles to each other ... constructing the mill on a swivel so that it may follow the direction of the wind . At the same time it should be ...
... construct two spirals on uprights set in three holes in the ground , forming lines at right angles to each other ... constructing the mill on a swivel so that it may follow the direction of the wind . At the same time it should be ...
Página 33
... constructed on this very economical principle must necessarily run , both mark the two classes of apparatus as being eminently suited for mutual assistance in future useful- ness . The anemometer of the " Robinson " type , having four ...
... constructed on this very economical principle must necessarily run , both mark the two classes of apparatus as being eminently suited for mutual assistance in future useful- ness . The anemometer of the " Robinson " type , having four ...
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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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