Wave function collapse: Difference between revisions

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As examples, individual counts in a [[double slit experiment]] with electrons appear at random locations on the detector; after many counts are summed the distribution shows a wave interference pattern.<ref name="Bach Pope Liou Batelaan 2013 p=033018">{{cite journal | last1=Bach | first1=Roger | last2=Pope | first2=Damian | last3=Liou | first3=Sy-Hwang | last4=Batelaan | first4=Herman | title=Controlled double-slit electron diffraction | journal=New Journal of Physics | publisher=IOP Publishing | volume=15 | issue=3 | date=2013-03-13 | issn=1367-2630 | doi=10.1088/1367-2630/15/3/033018 | page=033018 | arxiv=1210.6243 | bibcode=2013NJPh...15c3018B | s2cid=832961 | url=https://iopscience.iop.org/article/10.1088/1367-2630/15/3/033018}}</ref> In a [[Stern-Gerlach experiment]] with silver atoms, each particle appears in one of two areas unpredictably, but the final conclusion has equal numbers of events in each area.
 
This statistical aspect of quantum measurements differs fundamentally from [[classical mechanics]]. In quantum mechanics the only information we have about a system is its wave function and measurements of theits wavefunctionwave function can only give statistical information.<ref name=GriffithsSchroeter3rd/>{{rp|17}}
 
==Terminology==