Popular lectures and addresses / by William Thomson.

  • William Thomson, 1st Baron Kelvin
Date:
1889-
Catalogue details

Licence: Public Domain Mark

Credit: Popular lectures and addresses / by William Thomson. Source: Wellcome Collection.

    41/486 page 23
    tension is positive, are placed in contact and left to themselves undisturbed by gravity (in our favourite laboratory at the centre of the earth suppose), after performing vibrations subsiding in virtue of viscosity, the compound mass will come to rest, in a configuration consisting of two intersecting segments of spherical surfaces con- stituting the outer boundary of the two portions of liquid, and a third segment of spherical surface through their intersection constituting the interface between the two liquids. These three spherical surfaces meet at the same angles as three balancing forces in a plane, whose magnitudes are respectively the surface tensions of the outer surfaces of the two liquids and the tension of their interface. Figs. 2 to 5 (see pages 24, 25) illustrate these configurations in the case of bisulphide of carbon and water for several different proportions of the volumes of the two liquids. [In the figures the dark shading re- presents water (or sulphate of zinc) in each case.] When the volume of each liquid is given, and the angles of meeting of the three surfaces are
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