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#2
05 เมษายน 2016, 14:07
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Frederick J Almgren and Jean Taylor have written in an
evocative fashion about soap bubbles. While the subject has attracted attention for centuries, the first scientist to have devoted attention to this subject was the Belgian physicist Joseph Plateau. In 1873 he published a two-volume work summarizing his decades of research into soap bubbles and related phenomena due to surface tension. He gave the rules governing the geometry of bubbles, without any proof. It is a remarkable achievement as these experiments were performed when Plateau was blind. In a cluster of soap bubbles the films meet in one of two ways: either three surfaces meet at 120-degree angles along a curve; or six surfaces meet at a vertex, forming angles of about 109 degrees. 
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