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
... moving of substances which are not only useless , but which must be got rid of before the remainder can be useful . These are disadvantages under which all grand industries . labored while dependent upon water - power alone . Nor were ...
... moving of substances which are not only useless , but which must be got rid of before the remainder can be useful . These are disadvantages under which all grand industries . labored while dependent upon water - power alone . Nor were ...
Página 12
... moves forward the end of the measuring screw one four - thousandth of an inch . A sin- gle division of the limb of the tangent screw - head will therefore produce a movement in the direction of measurement of only one two - hundred- and ...
... moves forward the end of the measuring screw one four - thousandth of an inch . A sin- gle division of the limb of the tangent screw - head will therefore produce a movement in the direction of measurement of only one two - hundred- and ...
Página 14
... moves once more . But the steam - engine has not only increased the accuracy of con- structive art ; it has also greatly extended its power . Undertakings of a magnitude which could not have been attempted , and which would pro- bably ...
... moves once more . But the steam - engine has not only increased the accuracy of con- structive art ; it has also greatly extended its power . Undertakings of a magnitude which could not have been attempted , and which would pro- bably ...
Página 29
... moves from C ' to D ' , in the direction opposite to that of its former movement ; and as , during this period , the refrigerator removes the heat ... move- ment of the piston from D ' to A ' LIMIT OF ECONOMY IN HOT - AIR ENGINES . 29.
... moves from C ' to D ' , in the direction opposite to that of its former movement ; and as , during this period , the refrigerator removes the heat ... move- ment of the piston from D ' to A ' LIMIT OF ECONOMY IN HOT - AIR ENGINES . 29.
Página 35
... moves air - tight in a cylinder which is closed at both ends . Call one end of the cylinder A , and the other B. Call the ... move- ment tends to compress the air between B and C. Also the valve A will open at the same time , because the ...
... moves air - tight in a cylinder which is closed at both ends . Call one end of the cylinder A , and the other B. Call the ... move- ment tends to compress the air between B and C. Also the valve A will open at the same time , because the ...
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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.