We investigate the scaling properties of the edge distribution of soap froth and compare it with the area scaling law. The data collapse for edge scaling of cells belonging to the same topological class is explained by a harmonic expansion of the energy of the froth with area-perimeter constraint. The edge-scaling hypothesis is found to be comparable to area scaling. The implication on existing theories for the evolution of soap froth is discussed. (C) 1998 Elsevier Science B.V. All rights reserved. [References: 16]
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