if we want to find the probability of a wave function let ψ we use <ψ|ψ> when there is no change in wave function. but when we previously have wave function ψ and we quadruple it then wavefunction becomes ψ' the probability is found by |< ψ'|ψ>|^2. why we take square in this case? i cant understand it.(adsbygoogle = window.adsbygoogle || []).push({});

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# Finding probability of one state in another

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