Changes

The term Symmetry arises in a number of contexts, and has several, related meanings<ref> Intial definitions from: http://www.m-w.com/dictionary/symmetry</ref> :

The term Symmetry arises in a number of contexts, and has several, related meanings<ref> Intial definitions from: http://www.m-w.com/dictionary/symmetry</ref> :

   

   

* It may refer to an object which has balanced proportions, and the beauty of form arising from those balanced proportions, notably a face, or an animal, e.g a tiger, as in the poem by Willaim Blake (1757–1827):

* It may refer to an object which has balanced proportions, and the beauty of form arising from those balanced proportions, notably a face, or an animal, e.g a tiger, as in the poem by [[William Blake]] (1757–1827):

  TIGER, tiger, burning bright   

  TIGER, tiger, burning bright   

  In the forests of the night,   

  In the forests of the night,   

* It may also refer to the property of remaining invariant under certain changes (as of orientation in space, of the sign of the electric charge, of parity, or of the direction of time flow) -- used of physical phenomena and of equations describing them.

* It may also refer to the property of remaining invariant under certain changes (as of orientation in space, of the sign of the electric charge, of parity, or of the direction of time flow) -- used of physical phenomena and of equations describing them.

==References==

==References==

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