Report on Machinery and Processes of the Industrial Arts and Apparatus of the Exact SciencesVan Nostrand, 1869 - 669 páginas |
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Página 33
... weight of the mass , in order that the excess of heat being transferred to these might be afterwards taken up by the cold air of the supply as it enters . The first of the expedients here mentioned was employed by Mr. Ericsson , and the ...
... weight of the mass , in order that the excess of heat being transferred to these might be afterwards taken up by the cold air of the supply as it enters . The first of the expedients here mentioned was employed by Mr. Ericsson , and the ...
Página 52
... weight of the fly - wheel is reduced . This engine , which seems admirably adapted to small industries requiring but a fraction of a single horse - power , is not , however , very economical . From experiments made at the Conservatoire ...
... weight of the fly - wheel is reduced . This engine , which seems admirably adapted to small industries requiring but a fraction of a single horse - power , is not , however , very economical . From experiments made at the Conservatoire ...
Página 57
... weight or to turn a crank . The valves suggested and perhaps actually used by Huyghens for this purpose were sufficiently rude . They were nothing more than open but flexible leather tubes , which , after allowing the air to escape ...
... weight or to turn a crank . The valves suggested and perhaps actually used by Huyghens for this purpose were sufficiently rude . They were nothing more than open but flexible leather tubes , which , after allowing the air to escape ...
Página 60
... weight , is driven to the top of the cyl inder . The collapse which immediately follows produces a vacuum , or an approach to a vacuum , beneath the piston ; and this now descends , urged by the pressure of the atmosphere with its own ...
... weight , is driven to the top of the cyl inder . The collapse which immediately follows produces a vacuum , or an approach to a vacuum , beneath the piston ; and this now descends , urged by the pressure of the atmosphere with its own ...
Página 78
... weight , contributing nothing to work , then it would be equally true that the economical difference between two media would amount to the entire difference between the latent heats of the two ; and in the case here presented ...
... weight , contributing nothing to work , then it would be equally true that the economical difference between two media would amount to the entire difference between the latent heats of the two ; and in the case here presented ...
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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.