The Annual of Scientific Discovery, Or, Year-book of Facts in Science and ArtGould, Kendall, and Lincoln, 1870 |
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Результати 6-10 із 79
Сторінка 34
... surface of the rail , must be of the very best material , and at least two inches in thickness , thus giving a wearing sur- face of one - half inch in the head of the rail ; and , further , that the rail should stand a test half as ...
... surface of the rail , must be of the very best material , and at least two inches in thickness , thus giving a wearing sur- face of one - half inch in the head of the rail ; and , further , that the rail should stand a test half as ...
Сторінка 49
... surface , which will also be increased by flat bars projecting from the foot of the cyl- inder into the surrounding sand . Foundations of this class have been successfully employed by the Hon . W. J. McAlpine , in various bridges he has ...
... surface , which will also be increased by flat bars projecting from the foot of the cyl- inder into the surrounding sand . Foundations of this class have been successfully employed by the Hon . W. J. McAlpine , in various bridges he has ...
Сторінка 62
... surface often agitated by the wind , is a more serious matter , but one which does not enter into the present question . Upon the whole , it does seem a moral certainty that at least in two or 3 years - for one year seems out of the ...
... surface often agitated by the wind , is a more serious matter , but one which does not enter into the present question . Upon the whole , it does seem a moral certainty that at least in two or 3 years - for one year seems out of the ...
Сторінка 65
... surface 27.6 times as great as it is at the surface of the earth . He therefore constructed a small cupola furnace , in which the products of combustion could not freely escape , but were maintained under a pressure of 15 to 18 pounds ...
... surface 27.6 times as great as it is at the surface of the earth . He therefore constructed a small cupola furnace , in which the products of combustion could not freely escape , but were maintained under a pressure of 15 to 18 pounds ...
Сторінка 69
... surface of the sketching - table are undisturbed . We see no reason to doubt that M. Revoil's eye - piece might be adapted to the ordinary theodolite , so that any person who pos- sesses one of these instruments may , at a small expense ...
... surface of the sketching - table are undisturbed . We see no reason to doubt that M. Revoil's eye - piece might be adapted to the ordinary theodolite , so that any person who pos- sesses one of these instruments may , at a small expense ...
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The Annual of Scientific Discovery, Or, Year-book of Facts in Science ..., Том 5 Повний перегляд - 1854 |
The Annual of Scientific Discovery, Or, Year-book of Facts in Science ..., Том 5 Повний перегляд - 1854 |
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acetic acid action American ammonia animals apparatus appears atmosphere battery beds bridge cable carbon carbonic acid cause cent centimetres centre charcoal chemical chloride coal color Comptes Rendus connected containing copper corona cubic cubic metres cylinder depth diameter discovery dissolved eclipse effect electric engine eocene experiments fact feet fibre flame fossil French gases glass glycerine gun-cotton guns heat hydrochloric acid hydrogen inches Indian iron length light lime liquid magnet matter metal method metres miles miocene mixture nitric acid observations obtained ordinary oxide oxygen palladium paper passed placed plants plate platinum polariscope polarization potash precipitate present pressure produced Prof quantity railway rays River salt sandarac sodium solution spark species specific gravity spectrum steam steel rails substance sulphate sulphuric acid surface temperature thick tion tons tube tunnel vapor vibrations weight wire zinc zirconia
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Сторінка 269 - There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.
Сторінка i - ANNUAL OF SCIENTIFIC DISCOVERY ; or, Year Book of Facts in Science and Art, exhibiting the most important Discoveries and Improvements in Mechanics, Useful Arts, Natural Philosophy, Chemistry, Astronomy, Meteorology, Zoology, Botany, Mineralogy, Geology, Geography, Antiquities, etc.
Сторінка 136 - It consists in subjecting the vapours of volatile liquids to the action of concentrated sunlight, or to the concentrated beam of the electric light.