The outlines of physics: an elementary text-book . Fig. 88. (d) The upward pressure against the rubber diaphragm, being un-balanced, will distend the latter, rendering it concave, as seen frombelow (Fig. 89), and forcing it into the force is now to be balanced by pouringwater into the open arm of the U-tube, whichserves as a pressure gauge, until the diaphragmhas resumed its original plane contour. (e) Measure the difference of level h, k ofthe two columns in the U-shaped tube, also tliedistance e,f from the surface of the water in •the jar to the plane of the diaphragm. Removethe
The outlines of physics: an elementary text-book . Fig. 88. (d) The upward pressure against the rubber diaphragm, being un-balanced, will distend the latter, rendering it concave, as seen frombelow (Fig. 89), and forcing it into the force is now to be balanced by pouringwater into the open arm of the U-tube, whichserves as a pressure gauge, until the diaphragmhas resumed its original plane contour. (e) Measure the difference of level h, k ofthe two columns in the U-shaped tube, also tliedistance e,f from the surface of the water in •the jar to the plane of the diaphragm. Removethe blocks from beneath the jar, one at a time,and repeat the above measurements for the various depths of sub-meigence thus obtained. The data should accord with statement (1).. Fig. 89. 114 THE OUTLINES OF PHYSICS (/) Fill the jav with oil, or with strong brine, and repeat the deter-mination for a single depth. Water should still be used in the that the height hk is no longer equal to ef. Find the densityof the liquid in the jar, using one of the methods described in The result should verify the relation hk : ef:: d : 1, or hk_ef d. In this formula d is the density of the liquid in the jar as com-pared with the density of water, which is taken equal to unity. The height, hk, of the liquid in the U-tube is a measure of thepressure upon the diaphragm, and the relation expressed in theequation therefore verifies statement (2). 101. Experiment 25.—Pascals Vases. The statement that pressure within a given liquid depends upon the depth alone, and is independent of the form and volume of the containing vessel, may be verified by means of the following device, which is a modification of the classical HM apparatus known as Pascals vases : K A
Size: 1607px × 1554px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectphysics
