Annual of Scientific Discovery: Or, Year-book of Facts in Science and ArtGould and Lincoln, 1850 |
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Página 17
... quantity of rod - iron con- sumed for this purpose has , therefore , amounted in length to 126 miles , and in weight to about 900 tons ! The mode in which these legions of rivets have been constructed is briefly as follows . At the ...
... quantity of rod - iron con- sumed for this purpose has , therefore , amounted in length to 126 miles , and in weight to about 900 tons ! The mode in which these legions of rivets have been constructed is briefly as follows . At the ...
Página 19
... quantity of angle - iron thus worked up , through the top , bottom , and sides of all the tubes , amounts to 65 miles . The Britannia tower in the centre of the strait is at the base 62 feet by 52 , and rises to a height of 230 feet ...
... quantity of angle - iron thus worked up , through the top , bottom , and sides of all the tubes , amounts to 65 miles . The Britannia tower in the centre of the strait is at the base 62 feet by 52 , and rises to a height of 230 feet ...
Página 27
... quantity will escape the first time the steam is down ; and the scales cannot be slid upwards so as to make them indicate less than the true pressure , for this would be at once detected by comparison with the stuffing- boxes that hold ...
... quantity will escape the first time the steam is down ; and the scales cannot be slid upwards so as to make them indicate less than the true pressure , for this would be at once detected by comparison with the stuffing- boxes that hold ...
Página 29
... dipped for 15 minutes in nitric acid , strengthened by the admixture of an equal quantity of sulphuric acid , after which they are well washed in pure water and dried for two hours . " The fact 3 * MECHANICS AND USEFUL ARTS . 29.
... dipped for 15 minutes in nitric acid , strengthened by the admixture of an equal quantity of sulphuric acid , after which they are well washed in pure water and dried for two hours . " The fact 3 * MECHANICS AND USEFUL ARTS . 29.
Página 38
... quantity of steam which the boiler can produce in a given time . All recent improvements in boil- ers have been tending to obtain a greater amount of heating surface without increasing the length or diameter of the boiler , or making it ...
... quantity of steam which the boiler can produce in a given time . All recent improvements in boil- ers have been tending to obtain a greater amount of heating surface without increasing the length or diameter of the boiler , or making it ...
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Pasajes populares
Página 355 - Mayne, like a shewer from the South to the North, and from the North to the West, and then downe to the South againe.
Página 237 - We found the pillar to be of solid salt, capped with carbonate of lime, cylindrical in front and pyramidal behind. The upper or rounded part is about forty feet high, resting on a kind of oval pedestal, from forty to sixty feet above the level of the sea. It slightly decreases in size upwards, crumbles at the top, and is one entire mass of crystallization.
Página 5 - WASHINGTON STREET, BOSTON, 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.
Página 147 - Sometimes it will be more convenient to arrange the two charts in symmetrical positions, one to the left and the other to the right of the subject's median plane, and with a slight inclination toward this plane.