Changes

The term Symmetry arises in a number of contexts, and has several, related meanings all concerned with balance, equality and equivalence.<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 all concerned with balance, equality and equivalence.<ref> Initial definitions from: http://www.m-w.com/dictionary/symmetry</ref> :

   

   

* 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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