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Word: dualistic (lookup in dictionary) (lookup stats)
Dates: during 1930-1939
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Usage:

...that hypotheses should be avoided. In the light of wave mechanics alone, electrons lost their individualities, melted into a continuous field of negative electricity. But there was strong experimental evidence of "discontinuity," of individuality. For example, single electrons made tracks which could be photographed. Thus the election became a dualistic enigma, dancing weirdly in n dimensions. It was about this dualist electron that Dr. Heisenberg postulated his famed Uncertainty Principle. The position or velocity of a given electron, he showed, might be determined, never both. Increased precision in one calculation simply magnified the error in the other. This principle...

Author: /time Magazine | Title: Science: Youth & Atoms | 11/20/1933 | See Source »

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