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Question on perturbations

  1. Jan 21, 2009 #1
    1. The problem statement, all variables and given/known data
    Not a specific problem, but a question


    2. Relevant equations



    3. The attempt at a solution
    Is an infinitesmal rotation an example of a perturbation (in the position coordinate)? If not, what is the difference? What I'm seeing makes perturbations look like differentials that, after some manipulation, you take a limit as the "size" of the differential goes to zero; but something is telling me it's not really the same. If a perturbation is intended to be "retained" (ie, you don't take a limit as it goes to zero) than how is a "small" perturbation defined?
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
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