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

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

  1. Jun 18, 2013 #1
    Hi!

    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

    mfb

    User Avatar
    2016 Award

    Staff: Mentor

    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"
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Uncertainty Principal: Limit of measurement, or the nature of things
  1. Uncertainty principe (Replies: 1)

Loading...