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    physic Posts: 42, Reputation: 0
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    Apr 25, 2012, 08:06 AM
    uncertainty on Operator
    is the expectation value of

    I don't know what means expectation value of an opertor, square of an operator and square of all items [IMG]texify.com/img/\LARGE\!\langle\hat A\rangle^2\, \langle\hat A^2\rangle.gif[/IMG]

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