1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Uncertainty Principle Question

  1. Apr 11, 2007 #1
    Let's say a proton is confined to some diameter, d. What would be the uncertainty in the position?

    In some questions they use delx as (1/2)d as the uncertainty in position. In other cases they use the entire d as the uncertainty. This is extremely confusing...
    Last edited: Apr 11, 2007
  2. jcsd
  3. Apr 12, 2007 #2
    Must be d/2

    If I guess that the proton is in the middle, then the most I can be wrong by is d/2.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook