The Annual of Scientific Discovery, Or, Year-book of Facts in Science and ArtGould and Lincoln, 1855 |
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Pagina 7
... steam - of steam- engines and steamboats - of railroads and telegraphs , and photographs -the importance of science is no longer questioned . It is a truism— a commonplace . We are far from the foundation days of the Royal Society ...
... steam - of steam- engines and steamboats - of railroads and telegraphs , and photographs -the importance of science is no longer questioned . It is a truism— a commonplace . We are far from the foundation days of the Royal Society ...
Pagina 12
... steam - engines , & c . Also , contributions of the asylums for the blind , the deaf and dumb , and idiots , and specimens of workmanship executed by pupils of the Ragged Schools . The East India Company exhibited a very interesting ...
... steam - engines , & c . Also , contributions of the asylums for the blind , the deaf and dumb , and idiots , and specimens of workmanship executed by pupils of the Ragged Schools . The East India Company exhibited a very interesting ...
Pagina 28
... steam being applied , the water - wheel revolves with velocity , and the water is discharged by the nozzles on each side of the vessel . These form the only propelling power , and the invention is remarkable for its simplicity and ...
... steam being applied , the water - wheel revolves with velocity , and the water is discharged by the nozzles on each side of the vessel . These form the only propelling power , and the invention is remarkable for its simplicity and ...
Pagina 29
... steam may be supposed to be finally expanded in about that ratio , and the effect of each pair is theoretically equal to that of a single cylinder of 76 inches diameter , in which the steam is cut off at two - fifths of the stroke and ...
... steam may be supposed to be finally expanded in about that ratio , and the effect of each pair is theoretically equal to that of a single cylinder of 76 inches diameter , in which the steam is cut off at two - fifths of the stroke and ...
Pagina 30
... steam or by sails , without resisting their progress , and heaping a mound of water before the bows , as in the case of the old bluff , round - built vessels . It seemed now to be universally admitted , in Europe and in America , that ...
... steam or by sails , without resisting their progress , and heaping a mound of water before the bows , as in the case of the old bluff , round - built vessels . It seemed now to be universally admitted , in Europe and in America , that ...
Overige edities - Alles bekijken
The Annual of Scientific Discovery, Or, Year-book of Facts in ..., Volume 5 Volledige weergave - 1854 |
The Annual of Scientific Discovery, Or, Year-book of Facts in ..., Volume 5 Volledige weergave - 1854 |
The Annual of Scientific Discovery, Or, Year-book of Facts in Science and Art Volledige weergave - 1857 |
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Populaire passages
Pagina 165 - ... the same voltaic source, the same current in the same length of the same wire, gives a different result as the intensity is made to vary, with variations of the induction around the wire. The idea of intensity or the power of overcoming resistance, is as necessary to that of electricity, either static or current, as the idea of pressure is to steam in a boiler, or to air passing through apertures or tubes ; and we must have language competent to express these conditions and these ideas.
Pagina 228 - The natural excitation of osmose in the substance of the membranes or cell-walls dividing such solutions seems, therefore, almost inevitable. In osmose there is, further, a remarkably direct substitution of one of the great forces of Nature by its equivalent in another force — the conversion, as it may be said, of chemical affinity into mechanical power. Now, what is...
Pagina 165 - The production of a polarized state of the particles of neighboring matters by an excited body, constitutes induction, and this arises from its action upon the particles in immediate contact with it, which again act upon those contiguous to them, and thus the forces are transferred to a distance. If the induction remain undiminished, then perfect insulation is the consequence ; and the higher the polarized condition which the particles can acquire or maintain, the higher is the intensity which may...
Pagina 348 - Nymphaa alba, though it may be larger; nor is it so abundant an ornament of the tropical waters as the latter is of ours. But the question is not to be decided by a comparison of individual plants, or the effects they may produce in the landscape, but on the frequency with which they occur, and the proportion the brilliantly coloured bear to the inconspicuous plants.