The Annual of Scientific Discovery, Or, Year-book of Facts in Science and ArtGould, Kendall, and Lincoln, 1870 |
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Результати 6-10 із 74
Сторінка 29
... half inch . With 30 tons the deflection was two and one - fifth inch and the perma- nent set two and one - sixteenth inch . With Brown's steel rails , 45 tests gave an average deflection of but five - sixteenths inch and permanent set ...
... half inch . With 30 tons the deflection was two and one - fifth inch and the perma- nent set two and one - sixteenth inch . With Brown's steel rails , 45 tests gave an average deflection of but five - sixteenths inch and permanent set ...
Сторінка 30
... half cwt . for each person carried . STEEL RAILS . - THEIR DURABILITY . The annual report of the State Engineer of New York , prepared by S. H. Sweet , Deputy Engineer , contains the following regard- ing steel rails : " Bessemer steel ...
... half cwt . for each person carried . STEEL RAILS . - THEIR DURABILITY . The annual report of the State Engineer of New York , prepared by S. H. Sweet , Deputy Engineer , contains the following regard- ing steel rails : " Bessemer steel ...
Сторінка 32
... half or five - eighths of an inch in thickness , in the opinion of the most experienced railroad men who have examined it , meets the requirements of safety and durability . The rail consists of an iron base with a steel cap , united to ...
... half or five - eighths of an inch in thickness , in the opinion of the most experienced railroad men who have examined it , meets the requirements of safety and durability . The rail consists of an iron base with a steel cap , united to ...
Сторінка 34
... half inch in the head of the rail ; and , further , that the rail should stand a test half as severe as that previously men- tioned as applied to American rails . From what has now been advanced respecting the different modes of ...
... half inch in the head of the rail ; and , further , that the rail should stand a test half as severe as that previously men- tioned as applied to American rails . From what has now been advanced respecting the different modes of ...
Сторінка 36
... half as much , or 10 tons , and the average steam tractive force at least half a ton . The resist- ance of such a carriage at 20 miles an hour , upon a level , would not exceed 300 or 400 pounds , nor upon a gradient of one in 60 more ...
... half as much , or 10 tons , and the average steam tractive force at least half a ton . The resist- ance of such a carriage at 20 miles an hour , upon a level , would not exceed 300 or 400 pounds , nor upon a gradient of one in 60 more ...
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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.