Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 385
assumption isderived from a potential, the force at a will be the rate ofchange of potential in going from a to 5, and, similarly, theforce at c is the rate of change of potential in passing from cto d. If, now, a and b are made to coincide, respectively,X with c and d at the interface, the change… … (14) F1 sin ix = F2 sin i2. Again, let a small tube be drawncrossing the interface, and supposethat one end, having the area s, isin hv as at ab, and the other end,with the same area, is just within hv at ed. Then, since thefluid is incompressible, the total flow through each end ofthis tube must…
Physics
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