Machinery and Processes of the Industrial Arts: And Apparatus of the Exact SciencesU.S. Government Printing Office, 1869 - 669 páginas |
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Página 3
... each year introduces consists of these minor improvements ; and to make an exhaustive enumeration of such , as they appear in a general exposition of the industries of the world , would involve the DIVISION OF LABOR STIMULATES INVENTION .
... each year introduces consists of these minor improvements ; and to make an exhaustive enumeration of such , as they appear in a general exposition of the industries of the world , would involve the DIVISION OF LABOR STIMULATES INVENTION .
Página 12
... appears to be in actual contact with both screw and standard . But that this appearance is deceptive , is easily demonstrated by raising the plate slightly by means of one of its handles , when , on being 12 PARIS UNIVERSAL EXPOSITION .
... appears to be in actual contact with both screw and standard . But that this appearance is deceptive , is easily demonstrated by raising the plate slightly by means of one of its handles , when , on being 12 PARIS UNIVERSAL EXPOSITION .
Página 30
... appears that , of the heat required to operate an air - engine which fulfils the conditions above described , the proportion which is converti- ble into useful work will be greater or less , according as the maximum and minimum ...
... appears that , of the heat required to operate an air - engine which fulfils the conditions above described , the proportion which is converti- ble into useful work will be greater or less , according as the maximum and minimum ...
Página 40
... appear to be the fact in the case of the particular engine which was the subject of the experiments of Mr. Tresca above referred to . In this machine , which was of two - horse power , the result of very careful trial showed a con ...
... appear to be the fact in the case of the particular engine which was the subject of the experiments of Mr. Tresca above referred to . In this machine , which was of two - horse power , the result of very careful trial showed a con ...
Página 45
... appears that P = 29 pounds , p = 15 pounds , a = 527.4 square inches , A 904.8 square inches , l = 1.5 feet , L = 0.943 feet , and t = 520 ° . By substituting those numbers in the expression above , we find , T = 932 ° , and 9320-4600 ...
... appears that P = 29 pounds , p = 15 pounds , a = 527.4 square inches , A 904.8 square inches , l = 1.5 feet , L = 0.943 feet , and t = 520 ° . By substituting those numbers in the expression above , we find , T = 932 ° , and 9320-4600 ...
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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.