https://www.evknowledge.org/ekb/index.php?action=history&feed=atom&title=TFNR_-_Measurement 2026-10-23T01:42:08Z Revision history for this page on the wiki MediaWiki 1.25.2 https://www.evknowledge.org/ekb/index.php?title=TFNR_-_Measurement&diff=11906&oldid=prev 2024-06-07T17:05:13Z

<p>Created page with &quot;Measurement (any &#039;&#039;&#039;local&#039;&#039;&#039; interaction between &#039;&#039;&#039;individuals&#039;&#039;&#039; (&#039;&#039;&#039;separate&#039;&#039;&#039; Structures) Wikipedia In quantum mechanics, the measurement problem is the problem of defi...&quot;</p> <p><b>New page</b></p><div>Measurement (any '''local''' interaction between '''individuals''' ('''separate''' Structures)<br /> <br /> Wikipedia<br /> <br /> In quantum mechanics, the measurement problem is the problem of definite outcomes: quantum systems have superpositions but quantum measurements only give one definite result.[1][2]<br /> <br /> The wave function in quantum mechanics evolves deterministically according to the Schrödinger equation as a linear superposition of different states. However, actual measurements always find the physical system in a definite state. Any future evolution of the wave function is based on the state the system was discovered to be in when the measurement was made, meaning that the measurement &quot;did something&quot; to the system that is not obviously a consequence of Schrödinger evolution. The measurement problem is describing what that &quot;something&quot; is, how a superposition of many possible values becomes a single measured value.<br /> <br /> To express matters differently (paraphrasing Steven Weinberg),[3][4] the Schrödinger equation determines the wave function at any later time. If observers and their measuring apparatus are themselves described by a deterministic wave function, why can we not predict precise results for measurements, but only probabilities? As a general question: How can one establish a correspondence between quantum reality and classical reality?[5]<br /> <br /> <br /> <br /> {{Template:PaperPages1}}</div>

Paolo