Annual of Scientific Discovery: Or, Year-book of Facts in Science and ArtGould and Lincoln, 1850 |
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Página 17
... surface perfectly flat ; after which a series of holes , corresponding in size as well as in distance from each other with those in the " plates , " is punched all along the outer edge of each of their four sides . When thus prepared ...
... surface perfectly flat ; after which a series of holes , corresponding in size as well as in distance from each other with those in the " plates , " is punched all along the outer edge of each of their four sides . When thus prepared ...
Página 26
... surface of it in the boiler gets below the cap , the flue becomes red - hot , and the fusible metal melting off from the small tube , the steam instantly rushes out , and thus gives notice to the engineer . More water is of course then ...
... surface of it in the boiler gets below the cap , the flue becomes red - hot , and the fusible metal melting off from the small tube , the steam instantly rushes out , and thus gives notice to the engineer . More water is of course then ...
Página 27
... surface of the flues , and if the alarm is attended to in time there will be no danger in this . But if it is neglected , the only safe way is to partially extinguish the fires and start the pumps . The steam - gages are so constructed ...
... surface of the flues , and if the alarm is attended to in time there will be no danger in this . But if it is neglected , the only safe way is to partially extinguish the fires and start the pumps . The steam - gages are so constructed ...
Página 30
... be advantageously re- duced . One blade in the act of plunging , another sweeping under the shaft , and a third leaving the surface , are all that is necessary to be kept up , and a greater number , as 30 ANNUAL OF SCIENTIFIC DISCOVERY .
... be advantageously re- duced . One blade in the act of plunging , another sweeping under the shaft , and a third leaving the surface , are all that is necessary to be kept up , and a greater number , as 30 ANNUAL OF SCIENTIFIC DISCOVERY .
Página 31
... surface when ready for sea . The Washington has five fully immersed on each side . A boat never progresses in the ratio of the revolutions of the wheels , because of the yielding nature of the medium in which they act . Thus in going ...
... surface when ready for sea . The Washington has five fully immersed on each side . A boat never progresses in the ratio of the revolutions of the wheels , because of the yielding nature of the medium in which they act . Thus in going ...
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Academy action Agassiz American ammonia animal apparatus appearance ascer Athenæum atmosphere bituminous coal boiler bones Boston carbon carbonic acid cent chemical chloroform coal coast color connected containing copper crystals cylinder deposits diameter discovered discovery distance effect electric engine evaporation examination experiments fact feet flour fossil glass goitre gold gun-cotton gutta-percha heat inches invention iron island Journal Kilauea kyanized Lake Lake Superior length light lime liquid London longitude machine magnesia magnetic manufacture mass matter means meerschaum metal miles nearly nitric acid observations obtained oxide paper passed patent phenomena plant plates portion pounds present principle produced Prof Professor proportion quantity R. I. Murchison recently remarkable river rocks salt Science scientific solution species specimens square miles steam substance sugar sulphuric acid surface temperature thickness tion tons tube vessel weight whole wires zinc
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.