Suppose I have a particle confined between 0 and d on the x axis, and it has some wavefunction, if I measured the particle to be between some small interval [a, b], would the wavefunction collapse into a rectangle-like function with equal prob. density on the interval and zero outside? or what?(adsbygoogle = window.adsbygoogle || []).push({});

Suppose, instead, that I measured the region [a, b] and did NOT find the particle there, it is reasonable that the wavefunction would be affected (i.e. it must become zero on [a, b]). Right or wrong? and if right how will it look like?

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# Wavefunction after position measurement

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