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1. There is a similar relationship to the Heisenberg Uncertainty Principle using another conjugate pair of observables, specifically, energy and time. In emission spectroscopy, the width of lines (which gives a measure of AE) in a spectrum can be related to the uncertainty in the lifetime (that is, At) of the excited state.

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If the width of a spectral line of a certain electronic transition is 1.00 cm’, what is the minimum uncertainty in the lifetime of the transition? Get Chemistry Help Today