The theory that light can behave as both a particle and a wave depending on the manner in which it is observed.<ref>Wile, Dr. Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref>
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The '''particle/wave duality theory''' is the theory that light can behave as both a particle and a wave depending on the manner in which it is observed.<ref>Wile, Jay L. ''Exploring Creation With Chemistry''. Apologia Educational Ministries, Inc. 1998</ref>