| 单词 | uncertainty principle |
| 释义 | uncertainty principle in British Englishnoun the principle that energy and time or position and momentum of a quantum mechanical system, cannot both be accurately measured simultaneously. The product of their uncertainties is always greater than or of the order of h, where h is the Planck constant Also known as: Heisenberg uncertainty principle, indeterminacy principleuncertainty principle in American English in quantum mechanics, the principle that it is impossible to measure simultaneously and exactly two related quantities, as both the position and the momentum of an electron |
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