The Annual of Scientific Discovery, Or, Year-book of Facts in Science and ArtGould, Kendall, and Lincoln, 1870 |
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Сторінка vi
... engine . The presentation was made by Dr. Asa Gray , the President of the Academy . We make the following extract from his remarks : - 66 It appears that within the twenty years since this machinery was perfected , more than 1,000 engines ...
... engine . The presentation was made by Dr. Asa Gray , the President of the Academy . We make the following extract from his remarks : - 66 It appears that within the twenty years since this machinery was perfected , more than 1,000 engines ...
Сторінка 19
... engine is another alarum . By moving a handle in any of the carriages the alarums are set going . The action of moving the handle sets free a spring , and the handle is locked , and cannot be put in its original position until the ...
... engine is another alarum . By moving a handle in any of the carriages the alarums are set going . The action of moving the handle sets free a spring , and the handle is locked , and cannot be put in its original position until the ...
Сторінка 22
... engines , for exhausting and forcing the air into the tube , will be erected on shore at each end . This system of working the traffic will secure a constant supply of the purest air . By this system of working there would scarcely ...
... engines , for exhausting and forcing the air into the tube , will be erected on shore at each end . This system of working the traffic will secure a constant supply of the purest air . By this system of working there would scarcely ...
Сторінка 23
... engine and car are kept upon the track by friction rollers under the side of the cog rail , and the appliances for stopping the de- scent are ample . By means of atmospheric brakes either the car or engine could be sent down alone at ...
... engine and car are kept upon the track by friction rollers under the side of the cog rail , and the appliances for stopping the de- scent are ample . By means of atmospheric brakes either the car or engine could be sent down alone at ...
Сторінка 24
... ENGINE AS A BRAKE . M. L. De Chatelier gives the history of the improvement as fol- lows : " About the middle of 1865 , when first I thought of organizing a system of experiments for removing the difficulties of reversing the steam , I ...
... ENGINE AS A BRAKE . M. L. De Chatelier gives the history of the improvement as fol- lows : " About the middle of 1865 , when first I thought of organizing a system of experiments for removing the difficulties of reversing the steam , I ...
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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.