The Year-book of Facts in Science and ArtSimpkin, Marshall, and Company, 1872 |
Des de l'interior del llibre
Resultats 1 - 5 de 27.
Pàgina 16
... steel , the elasticity is increased , and the strength under a sed strain is doubled . The density and hardness are increased , and some alloys resist the file . But the fluidity when the metal is cast is increased , and finer castings ...
... steel , the elasticity is increased , and the strength under a sed strain is doubled . The density and hardness are increased , and some alloys resist the file . But the fluidity when the metal is cast is increased , and finer castings ...
Pàgina 19
... steel jumper , struck by a hammer , which may be impelled either by hand , in the way adopted by quarrymen , or by any other motive force ; or the holes may be bored by diamond - faced drills rotated by a stream of water or otherwise ...
... steel jumper , struck by a hammer , which may be impelled either by hand , in the way adopted by quarrymen , or by any other motive force ; or the holes may be bored by diamond - faced drills rotated by a stream of water or otherwise ...
Pàgina 47
... of wrought iron , surrounded with thick rings of cast steel . It will be fitted with a cast - iron ram of the like diameter , and there will be a • small gun - metal hydraulic attached to the large one MECHANICAL AND USEFUL ARTS . 47.
... of wrought iron , surrounded with thick rings of cast steel . It will be fitted with a cast - iron ram of the like diameter , and there will be a • small gun - metal hydraulic attached to the large one MECHANICAL AND USEFUL ARTS . 47.
Pàgina 48
... steel it is employed to move the cranes and other apparatus . Recent advices from Paris announce that it has been introduced into one of the theatres there for shifting the scenery , the motion when necessary being accelerated by the ...
... steel it is employed to move the cranes and other apparatus . Recent advices from Paris announce that it has been introduced into one of the theatres there for shifting the scenery , the motion when necessary being accelerated by the ...
Pàgina 54
... bichromatised gela- tine used for photographic negatives may also be thus utilised for producing an engraving on glass or steel ; and by a very simple arrangement the jet can be rendered movable and handled 54 THE YEAR - BOOK OF FACTS .
... bichromatised gela- tine used for photographic negatives may also be thus utilised for producing an engraving on glass or steel ; and by a very simple arrangement the jet can be rendered movable and handled 54 THE YEAR - BOOK OF FACTS .
Altres edicions - Mostra-ho tot
Frases i termes més freqüents
acid action ammonia animal apparatus appears Archimedean Screw astronomical August average Bequerel boiler bridge British Association carbon carbonic acid carried cave central line Chislehurst cloth coal colour committee constructed copper cylinder depth diameter disc earth eclipse Edward Sabine electric engine England exhibited experiments explosion fact feet fire glass gun-cotton heat Helston Hull hydrogen important inches increase instrument interesting iron light Llandudno London machine magnet manufacture Messrs metallic meteors miles millions Miltown Observatory observed obtained ordinary paper passed placed plate present pressure produced Professor quantity railway rocks Royal Society scientific ship Silloth solar solar eclipse solution steam steel stone Stowmarket Strathfield Strathfield Turgiss sugar supply surface Telegraph thick Thomson tion tons tramway tubes tunnel vapour Weybridge Weybridge Heath William Thomson Wisbech zinc
Passatges populars
Pàgina 119 - The hypothesis that life originated on this earth through moss-grown fragments from the ruins of another world may seem wild and visionary; all I maintain is that it is not unscientific.
Pàgina 119 - It is interesting to contemplate a tangled bank, clothed with many plants of many kinds, with birds singing on the bushes, with various insects flitting about, and with worms crawling through the damp earth, and to reflect that these elaborately constructed forms, so different from each other and dependent upon each other in so complex a manner, have all been produced by laws acting around us.
Pàgina 119 - ... we must regard it as probable in the highest degree that there are countless seedbearing meteoric stones moving about through space. If at the present instant no life existed upon this earth, one such stone falling upon it might, by what we blindly call natural causes, lead to its becoming covered with vegetation.