The Annual of Scientific Discovery, Or, Year-book of Facts in Science and ArtGould, Kendall, and Lincoln, 1870 |
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Результати 1-5 із 59
Сторінка vii
... weight per yard of only 45 pounds , the company obtained a steel rail having double the strength of the iron rails of a larger section previously employed by them ; the cost to the company per ton of iron rails having been from 60 ...
... weight per yard of only 45 pounds , the company obtained a steel rail having double the strength of the iron rails of a larger section previously employed by them ; the cost to the company per ton of iron rails having been from 60 ...
Сторінка xi
... weights of those bodies which are now accepted as ele- ments , he argued the probability of their being themselves proved to be complex . The limits of chemistry he defines in these words : " The ex- isting chemistry is , therefore ...
... weights of those bodies which are now accepted as ele- ments , he argued the probability of their being themselves proved to be complex . The limits of chemistry he defines in these words : " The ex- isting chemistry is , therefore ...
Сторінка xii
... weight of charcoal per month would be sufficient for a closet used by six persons daily . It is not likely , however , that this modification will find extensive adoption , except in localities peculiarly situated . ” We incorporate ...
... weight of charcoal per month would be sufficient for a closet used by six persons daily . It is not likely , however , that this modification will find extensive adoption , except in localities peculiarly situated . ” We incorporate ...
Сторінка 20
... weight of the bell and of the machinery within it will be a little in excess of the weight of water dis- placed , and therefore the only resistance to be overcome by the hydraulic presses when pushing forward the bell is the friction ...
... weight of the bell and of the machinery within it will be a little in excess of the weight of water dis- placed , and therefore the only resistance to be overcome by the hydraulic presses when pushing forward the bell is the friction ...
Сторінка 29
... weight of steel rails is decreased in propor- tion to their strength , these advantages of cheaper traction and maintenance will not , of course , be realized . The best practice , here and abroad , is to use the same weight for steel ...
... weight of steel rails is decreased in propor- tion to their strength , these advantages of cheaper traction and maintenance will not , of course , be realized . The best practice , here and abroad , is to use the same weight for steel ...
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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 |
Загальні терміни та фрази
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
Популярні уривки
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.