 | William Enfield - 1811 - 476 pàgines
...half the pressure on au equal surface at the bottom XR ; which pressure (by Prop I. and III ) is equal to the weight of a column of water whose base is the surface ZC^, and whose height is the depth of the stream. Therefore the pressure against the surface... | |
 | John Robison - 1822 - 736 pàgines
...contraction, by requiring an augmentation of velocity, employs a part of the impelling force precisely equal to the weight of a column of water whose base is the contracted passage, and whose height is the fall which would produce a velocity equal to this augmentation.... | |
 | Miles Bland - 1824 - 380 pàgines
...ascending tube : and by repeating the operation may be raised to the required altitude. The pressure upon the piston is equal to the weight of a column of water whose base is equal to that of the piston, and altitude the distance of the surface of the water in the ascending... | |
 | Peter Nicholson - 1825 - 1046 pàgines
...same time. PROP. 4. — The force oj a stream of watir against any plane obstacle at rest, is equal to the weight of a column of water, whose base is the section of the stream ; and height the space destended through by a falling body, to acquire that velocity. For let... | |
 | William Emerson - 1825 - 506 pàgines
...the fluid against the plane. 2s Cor. \ . The force of a stream of water against any plane, is eyual to the weight of a column of water, whose base is the section of the stream, and height !!£. ; or the height of the water, if it flow 2s through a hole at the bottom of... | |
 | 1858 - 648 pàgines
...object in the absence of any horizontal motion ! Nor is it hydrostatic pressure, which pressure is equal to the weight of a column of water whose base is the surface pressed, &c.; this pressure is that sustained by dock gates with a head of water on one side... | |
 | Perry Fairfax Nursey - 1828 - 474 pàgines
...smaller, or larger, than the cylinder GH, the body of water supported by the workman is always equal to the weight of a column of water whose base is the surface of the piston Б, and depth the distance £ F above the surface of) the water In the well.... | |
 | 1829 - 500 pàgines
...Hydrostatics.) Hence it appears, that the pressure exerted by the water in PV on the lower surface of the piston is equal to the weight of a column of water whose base is equal to the section of the piston, and whose height is M N. This, therefore, is the force to be overcome... | |
 | 1829 - 522 pàgines
...at each stroke to lift the piston. The quantity of water discharged at •.vcli stroke, is equal to a column of water, whose base is the section of the piston, and whose altitude is the length of the stroke. This quantity may, therefore, be found in cubic feet> by multiplying... | |
 | Denison Olmsted - 1832 - 402 pàgines
...(Art. 456.) Hence it appears, that the pressure exerted by the water in PV on the lower surface of the piston is equal to the weight of a column of water whose base is equal to the section of the piston, and whose height is MN. This, therefore, is the force to be overcome... | |
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The resistance which is opposed to a pump rod in raising water, is ~equal to the weight of a column of water whose base is the area of the piston, and... 
