| duality [n] |
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| 1) | being twofold; a classification into two opposed parts or subclasses; "the dichotomy between eastern and western culture" |
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| Synonyms : | dichotomy |
| See Also:
| categorisation dichotomise |
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| 2) | (physics) the property of matter and electromagnetic radiation that is characterized by the fact that some properties can be explained best by wave theory and others by particle theory |
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| Synonyms : | wave-particle_duality |
| See Also:
| property natural_philosophy |
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| 3) | (geometry) the interchangeability of the roles of points and planes in the theorems of projective geometry |
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| Synonyms : | |
| See Also:
| exchangeability geometry |
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