The Annual of Scientific Discovery, Or, Year-book of Facts in Science and ArtGould and Lincoln, 1855 |
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Pagina 18
... wood in its trunk , ) but he has also imported , in the finest state for germination , large quantities of seed , which have been freely distributed throughout the country and in the Colonies . At the last Annual State Fair of New York ...
... wood in its trunk , ) but he has also imported , in the finest state for germination , large quantities of seed , which have been freely distributed throughout the country and in the Colonies . At the last Annual State Fair of New York ...
Pagina 28
... wooden cogs , which mesh into a smaller pinion on the propeller shaft below . The steam is admitted into the smaller cylinders at a pressure of about 20 pounds above that of the atmosphere , and expanding by the lap of the valve merely ...
... wooden cogs , which mesh into a smaller pinion on the propeller shaft below . The steam is admitted into the smaller cylinders at a pressure of about 20 pounds above that of the atmosphere , and expanding by the lap of the valve merely ...
Pagina 31
... wonders were also being done . It was not easy to carry the elongating of the vessels much further in wooden ships , because they could not get timber large enough , and it was impossible to make it MECHANICS AND USEFUL ARTS . 31.
... wonders were also being done . It was not easy to carry the elongating of the vessels much further in wooden ships , because they could not get timber large enough , and it was impossible to make it MECHANICS AND USEFUL ARTS . 31.
Pagina 37
... wood - working machinery — and the elder Brunel , designed machines which , at one time , promised a tolerable degree of success . These were succeeded by a very massive cast - iron apparatus constructed under the direction of Prof ...
... wood - working machinery — and the elder Brunel , designed machines which , at one time , promised a tolerable degree of success . These were succeeded by a very massive cast - iron apparatus constructed under the direction of Prof ...
Pagina 38
... wood , and controlled in their position by the hands of the attendant , readily follow ( by the free lateral ... wood upon the inner side must be packed more densely . The wood is steamed for from half to one hour for each inch of ...
... wood , and controlled in their position by the hands of the attendant , readily follow ( by the free lateral ... wood upon the inner side must be packed more densely . The wood is steamed for from half to one hour for each inch of ...
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 |
Veelvoorkomende woorden en zinsdelen
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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.