Report on Machinery and Processes of the Industrial Arts and Apparatus of the Exact SciencesVan Nostrand, 1869 - 669 páginas |
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Página 7
... becomes ultimately utilized in the manufacture , constitutes in many cases but a small proportion of the entire weight , and perhaps a less proportion still of the bulk ; so that the greater portion of the expense of transportation is ...
... becomes ultimately utilized in the manufacture , constitutes in many cases but a small proportion of the entire weight , and perhaps a less proportion still of the bulk ; so that the greater portion of the expense of transportation is ...
Página 11
... becomes a requisite more and more indispensable . In the earlier period of the history of industry , and even until a time comparatively recent , no higher precision was obtainable than that of which the human hand is capable ; and this ...
... becomes a requisite more and more indispensable . In the earlier period of the history of industry , and even until a time comparatively recent , no higher precision was obtainable than that of which the human hand is capable ; and this ...
Página 14
... become by its aid oper- ations of daily accomplishment , and are too familiar to attract especial notice . A mass of thirty or forty tons of metal is now wrought upon all its surfaces and transformed into any desired shape with greater ...
... become by its aid oper- ations of daily accomplishment , and are too familiar to attract especial notice . A mass of thirty or forty tons of metal is now wrought upon all its surfaces and transformed into any desired shape with greater ...
Página 20
... becomes an inconvenient incumbrance . The inventor has successfully disem- barrassed himself of this incumbrance by the simple expedient of substi- tuting for the cards a continuous sheet of perforated paper 20 PARIS UNIVERSAL EXPOSITION .
... becomes an inconvenient incumbrance . The inventor has successfully disem- barrassed himself of this incumbrance by the simple expedient of substi- tuting for the cards a continuous sheet of perforated paper 20 PARIS UNIVERSAL EXPOSITION .
Página 38
... becomes positive . But C moves the faster of the two , so that the displacement continues throughout the greater part of the positive stroke . A little before the end , the distance between the two pistons becomes minimum ; and they are ...
... becomes positive . But C moves the faster of the two , so that the displacement continues throughout the greater part of the positive stroke . A little before the end , the distance between the two pistons becomes minimum ; and they are ...
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Términos y frases comunes
advantage amount angle apparatus applied armature atmosphere axis Bessemer process boiler calories carried cent centimetres circumference compression construction contrivance crank cubic metres cylinder diameter direction discharge disk distance effect electric employed engine equal exhibited experiments Exposition extremity feet force furnace furnished glass half heat horizontal horse-power hundred hydraulic hydraulic head illustrated inches increased instrument introduced invention inventor iron kilograms kilometres latent heat length lever light light-houses liquid machine manufacture means mechanical ment Messrs metal metres millimetres mode motion movable types movement necessary object observed operation ordinary Paris passes piston plate position pounds practical present pressure prism produced pulley pump purpose refrigerator reservoir revolution roller rotary engine rotation screw sextant shaft side Siemens space spherometer steam steam-engine steel surface telescope temperature tion tonometer tube turbine turn valve vapor velocity vertical vessel weight wheel Wicklow Head
Pasajes populares
Página 31 - B with the sound velocity where y is the ratio of the specific heat at constant pressure to the specific heat at constant volume, and p is the gas pressure.