Plateau's laws

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Plateau's Rules describe the structure of soap films in foams. These rules were formulated in the 19th century by the Belgian physicist Joseph Plateau from his experimental observations.

Plateau's rules state:

1. Soap films always meet in threes, and they do so at an angle of 120 degrees forming an edge called a Plateau Border.
2. These Plateau Borders meet in fours at an angle of 109.47 degrees (the tetrahedral angle) to form a vertex.

Configurations other than those of Plateau's Rules are unstable and the foam will quickly tend to rearrange itself to conform to these rules.

External links

• [Mathworld.wolfram.com]

 

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