The Annual of Scientific Discovery, Or, Year-book of Facts in Science and ArtGould and Lincoln, 1867 - Industrial arts |
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Page xi
... spectra , formed by flint and crown glass . " The improvements of Mr. Alvan Clark , of Cambridge , Mass . , in the construction and local correction of lenses for the telescope , for which the Rumford Medal has recently been awarded by ...
... spectra , formed by flint and crown glass . " The improvements of Mr. Alvan Clark , of Cambridge , Mass . , in the construction and local correction of lenses for the telescope , for which the Rumford Medal has recently been awarded by ...
Page 187
... spectra of some of the nebulæ , taken in connection with observations of the nitrogen spectrum made in the laboratory of Mr. Waltenhofen . Both these observers have been led to the suspicion that nitrogen is not an elementary substance ...
... spectra of some of the nebulæ , taken in connection with observations of the nitrogen spectrum made in the laboratory of Mr. Waltenhofen . Both these observers have been led to the suspicion that nitrogen is not an elementary substance ...
Page 222
... spectra of the two flames at once , and compare them . The third telescope carries a scale . The use of a spectroscope merely involves placing the substance to be examined in a spirit or gas flame , and then looking through the ...
... spectra of the two flames at once , and compare them . The third telescope carries a scale . The use of a spectroscope merely involves placing the substance to be examined in a spirit or gas flame , and then looking through the ...
Page 225
... spectra characteristic of an ignited gas , that is , of a flame . The Fraunhofer lines in that case are , as we have said , bright instead of dark , as in the solar spectrum , and the evidence is of a very tangible and unmistakable kind ...
... spectra characteristic of an ignited gas , that is , of a flame . The Fraunhofer lines in that case are , as we have said , bright instead of dark , as in the solar spectrum , and the evidence is of a very tangible and unmistakable kind ...
Page 227
... spectra of the stars . If the three bright lines be supposed to indicate matter in its most primary forms , still we should expect to find in some of the nebulæ , or in some parts of them , indication by a more complex spectrum , of an ...
... spectra of the stars . If the three bright lines be supposed to indicate matter in its most primary forms , still we should expect to find in some of the nebulæ , or in some parts of them , indication by a more complex spectrum , of an ...
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acid action Albertite American amount aniline animal appears atmosphere bitumen body bolide bright lines cable carbonic carbonic acid cause centimetres chemical chloride cloth coal color combustion containing copper cylinder dark diameter distance earth effect electricity engine existence experiments exposed fact feet flame force furnace gaseous glass gun-cotton heat hundred hydrogen inches increase infusoria iron lake light magnesium mass material matter means meat mechanical metal metres miles minute muscle muscular nebula nitrate nitrogen nitroglycerine object observations obtained ordinary oxide oxygen ozone paper Parkesine phosphorus photographs plants plate portion potash pounds present produced Prof quantity rocks salt Science Scientific Scientific American shot silicate soda sodium sodium amalgam solar solution species spectra spectrum stars steam steel substance sulphate sulphur sulphuric acid surface telescope temperature tion tube tunnel vapor vessels weight zinc
Popular passages
Page 261 - a special mineralization producing a bituminous matter instead of coal or lignite. This operation is not attributable to heat, nor of the nature of a distillation, but is due to chemical reactions at the ordinary temperature, and under the normal conditions of climate.
Page 303 - When the ether spray thus produced is directed upon the outer skin, the skin is rendered insensible within a minute; but the effects do not end here. So soon as the skin is divided, the ether begins to exert on the nervous filaments the double action of cold and of etherization : so that the narcotism can be extended deeply to any desired extent. Pure rectified ether used in this manner is entirely negative ; it causes no irritation, and may be applied to a deep wound, as I shall show, without any...