 | Perry Fairfax Nursey - 1851 - 552 페이지
...so, the gravity of the water in the pump, which it will do when the upper discharge orifices C, U, move with the velocity which a heavy body would attain in falling from С to the water level, LL, fig. 14. The pump should be kept usually raising a moderate quantity... | |
 | British Association for the Advancement of Science - 1853 - 618 페이지
...conduits of the wheel gently, that is to say, with scarcely any motion in relation to their mouths. In order to attain the equalization of these velocities,...; and that the orifices through which the water is ilijected into the wheel-chamber should be conjointly of such area that when all the water required... | |
 | Sir William Fairbairn - 1861 - 328 페이지
...to say, with scarcely any motion in relation to -their mouths. In order to attain the equalisation of these velocities, it is necessary that the circumference...vertical space equal to half the vertical fall of water, or, in other words, with a velocity due to half the fall, and that the orifices through which... | |
 | Edward Spon, Oliver Byrne, Ernest Spon, Francis N. Spon - 1874 - 396 페이지
...conduits of the wheel gently, that is to say, with scarcely any motion in relation to their mouths. In order to attain the equalization of these velocities,...circumference of the wheel should move with the velocity which e heavy body would attain in falling through a vertical space equal to half the vertical fall of the... | |
 | John Neville - 1875 - 572 페이지
...conduits of the wheel gently, that is to say, with scarcely any motion in relation to their mouths. In order to attain the equalization of these velocities,...that the circumference of the wheel should move with tlie velocity which a heavy bodi/ would attain, in falling through a vertical space equal to half the... | |
 | William Donaldson - 1876 - 110 페이지
...Thompson before the British Association in 1852 : — water and the wheel. This velocity must be equal to the velocity which a heavy body would attain in falling through a vertical space equal to half the height of the fall. Thus one half only of the fall is employed in producing velocity in the water,... | |
 | sir William Fairbairn (1st bart.) - 1878 - 678 페이지
...is to say, with scarcely any motion in relation to their mouths. In order to attain the equalisation of these velocities, it is necessary that the circumference...vertical space equal to half the vertical fall of water — or, in other words, with a velocity due to half the fall — and that the orifices through... | |
 | 1851 - 498 페이지
...discharges upwards and the other downwards. Of this machine, one of the most essential features is, that the circumference of the wheel should move with...heavy body would attain in falling through a vertical From the Glasgow Practical Mechanic's Journal, No. 36. space e^ual to half the vertical fall of the... | |
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... velocity of the circumference is made the same as the velocity of the entering water, and thus there is no impact between the water and the wheel ; but, on the contrary, the water enters the radiating conduits of the wheel gently, that is to say,... 