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Correct version of uncertainty Principle

  1. Aug 28, 2007 #1
    1. The problem statement, all variables and given/known data

    What is correct: delta E delta t> h' where h'=h/2π
    or,delta E delta t> h'/2

    generally ~ sign is written in this expression of uncertainty principle...I want to be sure

    2. Relevant equations

    It is uncertainty principle.

    3. The attempt at a solution

    I think it is the 2nd which is true.
    We know (delta x)(delta p)> h'/2
    =>[(delta x)/c][(delta p)c]>h'/2
    => (delta t)(delta E)>h'/2
  2. jcsd
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