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Uncertainty Principal: Limit of measurement, or the nature of things

  1. Jun 18, 2013 #1

    I found a few old threads lying around regarding this, such as this one, but I thought I'd start a new one asking the question in my own way. So here goes.

    Is the uncertainty described by the Uncertainty Principal a result of the fact that by measuring something we affect it, or a result of the fundamental nature of sub-atomic particles?

    If it's just the nature of things, then is the fact that we also can't measure things without affecting them just compounding the issue, like salt in a wound?

    Super-bonus-follow-up question: Does the idea that we can't measure things without affecting them hold true on a macroscopic level as well, but just not significantly so?
  2. jcsd
  3. Jun 18, 2013 #2


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    It is a result of the fundamental nature of those particles.

    There are (very recent) measurements which do not influence the particles so significantly, they can really measure both complementary quantities - but the fundamental uncertainty is unavoidable.

    Well, every measurement requires some interaction...
  4. Jun 18, 2013 #3
    besides what mfb posted above:

    the maths.....also supports ...just the "nature of things"
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