Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Future measurements affect possible "elements of reality"

  1. Jul 31, 2014 #1

    RUTA

    User Avatar
    Science Advisor

    Here is a fun talk by Lev Vaidman wherein he concludes that "future measurements affect possible sets of 'elements of reality'." He writes on one of his slides, "I define that there is an element of reality at time t for an observable C, "C = c," when it can be inferred with certainty that the result of a measurement of C, if performed, is c."



    His talk was delivered this month at a conference on retrocausality hosted by Huw Price.

    He shows results of an experiment in which he embeds an interferometer inside an interferometer. His measurement results indicate (watch and see if you agree) that it is possible for an element of reality (a photon) to exist in the embedded interferometer, but not along any path entering or leaving the embedded interferometer.
     
    Last edited by a moderator: Sep 25, 2014
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted



Similar Discussions: Future measurements affect possible "elements of reality"
Loading...