Snow, Benjamin Warner, 1860- · Madison, Wis. · leaf 221
nd Surface Energy. An illustration of the tendency of a film to contract, and at the same time a measure ofthe surface tension ofthis film, may be ob-tained by withdraAvingfrom a soap solution aA-shaped frame AB,Fig. 141, upon which islaid a freely sliding AvireCD. A liquid film thenoccupies the… … SURFACE ENERGY AND SURFACE TENSION. 217 gravity. If T represents the tension existing upon a line of par-ticles of unit length in each surface of the film, the total forceapplied to the movable wire is 2.TCD, since the film has twosurfaces. The wire remains in equilibrium when the total up-Avard…
Physics
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