from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A principle in quantum mechanics holding that increasing the accuracy of measurement of one observable quantity increases the uncertainty with which another conjugate quantity may be known.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Heisenberg uncertainty principle.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (quantum theory) the theory that it is impossible to measure both energy and time (or position and momentum) completely accurately at the same time
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