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 30
Сторінка 28
... steel tires . Besides being less liable to break by the action of frost , they make less noise . SLIDING OF CAR - WHEELS . An experiment has been made at Munich for ... STEEL RAILS AND STEEL - HEADED RAILS 28 ANNUAL OF SCIENTIFIC DISCOVERY .
... steel tires . Besides being less liable to break by the action of frost , they make less noise . SLIDING OF CAR - WHEELS . An experiment has been made at Munich for ... STEEL RAILS AND STEEL - HEADED RAILS 28 ANNUAL OF SCIENTIFIC DISCOVERY .
Сторінка 29
IMPROVED TRACTION UPON STEEL RAILS AND STEEL - HEADED RAILS . It has been too much the practice of railway managers to con- sider only the increased durability of steel . A less striking , but perhaps equally important advantage , is ...
IMPROVED TRACTION UPON STEEL RAILS AND STEEL - HEADED RAILS . It has been too much the practice of railway managers to con- sider only the increased durability of steel . A less striking , but perhaps equally important advantage , is ...
Сторінка 30
... steel cap as with an all - steel rail , the first cost will be greatly decreased . A rail made in two or three continuous parts , breaking joints , is also a practical insurance against disaster from broken rails . State Engineer's ...
... steel cap as with an all - steel rail , the first cost will be greatly decreased . A rail made in two or three continuous parts , breaking joints , is also a practical insurance against disaster from broken rails . State Engineer's ...
Сторінка 31
... Steel Rails . As no steel rails are reported to have worn out on our roads , the comparative durability of steel and iron cannot be absolutely determined . The president of the Philadelphia and Baltimore Railway states ( in the letter ...
... Steel Rails . As no steel rails are reported to have worn out on our roads , the comparative durability of steel and iron cannot be absolutely determined . The president of the Philadelphia and Baltimore Railway states ( in the letter ...
Сторінка 32
... steel rails will be gradually laid the entire length of the road , the greater durability of these rails overcoming the objection to their increased cost . ' " Railway Times . STEEL - CAPPED RAILS . " The invention by J. L. Booth , of ...
... steel rails will be gradually laid the entire length of the road , the greater durability of these rails overcoming the objection to their increased cost . ' " Railway Times . STEEL - CAPPED RAILS . " The invention by J. L. Booth , of ...
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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
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.