Chemical News and Journal of Industrial Science, Volúmenes27-28Chemical news office., 1773 |
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Página 6
... light colour , is ore by the miners on generally found mixed with carbonates of lime , magnesia , & c . Some rhombohedral crystals are found of a pale yellow colour , though the general colour of it varies con- siderably . It occurs in ...
... light colour , is ore by the miners on generally found mixed with carbonates of lime , magnesia , & c . Some rhombohedral crystals are found of a pale yellow colour , though the general colour of it varies con- siderably . It occurs in ...
Página 20
... light is propagated , absolutely empty ? A century ago the answer to this question would have been , " No , for particles of light are incessantly shot through space . " The reply of modern science is also negative , but on a somewhat ...
... light is propagated , absolutely empty ? A century ago the answer to this question would have been , " No , for particles of light are incessantly shot through space . " The reply of modern science is also negative , but on a somewhat ...
Página 25
... light from either side of the annulus may not be too divergent to pass through the ACTION OF SULPHURETTED HYDROGEN ... light is ob- structed , and the chromospheric light is allowed to pass . The chromosphere is afterwards brought to a ...
... light from either side of the annulus may not be too divergent to pass through the ACTION OF SULPHURETTED HYDROGEN ... light is ob- structed , and the chromospheric light is allowed to pass . The chromosphere is afterwards brought to a ...
Página 29
... Light Journal . OUTLINE OF A NEW EXPLANATION OF THE ACTION OF SUNLIGHT ON IODIDE OF SILVER . * By Dr. J. EMERSON REYNOLDS , Professor of Analytical Chemistry , and Keeper of the Mineral Department in the Royal Dublin Society . WHITE light ...
... Light Journal . OUTLINE OF A NEW EXPLANATION OF THE ACTION OF SUNLIGHT ON IODIDE OF SILVER . * By Dr. J. EMERSON REYNOLDS , Professor of Analytical Chemistry , and Keeper of the Mineral Department in the Royal Dublin Society . WHITE light ...
Página 30
... light on iodide of silver . Common experience leads us to the conclusion that in many cases the action of light chiefly consists in the severance of the union of unlike bodies held in combina- tion by comparatively feeble affinity ; and ...
... light on iodide of silver . Common experience leads us to the conclusion that in many cases the action of light chiefly consists in the severance of the union of unlike bodies held in combina- tion by comparatively feeble affinity ; and ...
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Términos y frases comunes
acetic acid action alcohol alkaline alumina ammonia analysis aniline anthracene apparatus appears applied Assays atoms barium baryta body boiling bromine calcium carbonic acid caustic cent chemical chemistry chemists chloric acid chloride coal colour combination composition compounds containing converted copper crystallisation crystals decomposed decomposition deposited dilute dissolved distilled electricity employed ether evaporation experiments filtered flask formation formed formic acid formula furnace fused glass heat hydrate hydrochloric acid hydrogen Improvements insoluble iodide iron Laboratory lime liquid magnesia manganese manufacture matter metallic method methyl mineral mixture nitrate nitric acid nitrogen observed obtained ordinary oxalic oxide oxidising oxygen paper PATENTS phosphate phosphoric acid potash potassa potassium precipitate prepared present produced pure pyrites quantity reaction Royal salt sample silicate silver Society soda sodium soluble solution substance sulphate sulphide sulphuretted hydrogen sulphuric acid temperature tion toluidine treated tube vapour washed yields zinc
Pasajes populares
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Página 108 - Chemistry, Medicine, Surgery, and the Allied Sciences. A Dictionary of Chemistry and the Allied Branches of other Sciences.
Página 232 - Stevenson, president, in the chair. The minutes of the previous meeting having been read and confirmed, Mr.
Página 5 - Thy Father has written for thee." " Come, wander with me," she said, "Into regions yet untrod; And read what is still unread In the manuscripts of God." And he wandered away and away With Nature, the dear old nurse, Who sang to him night and day The rhymes of the universe. And whenever the way seemed long, Or his heart began to fail, She would sing a more wonderful song, Or tell a more marvellous tale.
Página 170 - By a delicate mathematical analysis, Thomson arrives at the theorem that the ''average pressure at any point of an incompressible, frictionless fluid, originally at rest, but set in motion and kept in motion by solids, moving to and fro, or whirling round in any manner, through a finite space of it," would explain the attractions just described.
Página 144 - London. /Chemical Technology, or Chemistry in its ^-^ Applications to the Arts and Manufactures. By THOMAS RICHARDSON and HENRY WATTS.
Página 96 - Supplement; bringing the Record of Chemical Discovery down to the end of the year 1869 ; including also several Additions to, and Corrections of, former results which have appeared in 1870 and 1871.
Página 253 - ... effect is proportional to the magnetic intensity of the bar multiplied by the current traversing the coil seems to indicate that in this case the effect is produced by the attraction of the magnetic particles by the coil. But then it will be asked why so remarkable an augmentation of the effect is produced by the increase of tension in the case of the soft iron bars. When we are able to answer this question in a satisfactory manner, we shall probably have a much more complete acquaintance with...
Página 73 - Since it appeared that the purest and densest vapour alone gave the greatest number of lines, it became of interest to examine the spectra of compounds consisting of a metal combined with a nonmetallic element. Experiments with chlorides are recorded. It was found in all cases that the difference between the spectrum of the chloride and the spectrum of the metal was that under the same spark-conditions all the short lines were obliterated. Changing the spark-conditions, the final result was that...
Página 224 - An act to amend the law for the Prevention of Adulteration of Food and Drink, and of Drugs.