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Foam rules O.K.?

The Belgian scientist Joseph Plateau  (above) made painstaking observations  of  soap films in wire frames. From  these observations (and his own  intuition) he developed a set of rules  which govern the equilibrium of soap  films and foams:

  • Three soap films meet at angles  of 120 degrees.
  • The films form a curved  triangular channel known as a   Plateau border.
  • Four Plateau borders meet at angles of 109.6 degrees to form a vertex.
  

 

 

Liquid foams
Solid foams
A child's view of physics
Foam Research

 




 




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