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Rindler - Mass of Charged Capacitor

  1. Oct 30, 2003 #1

    pmb

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    I've placed an article online which is on the mass of a charged capacitor.

    "A simple relativistic paradox about electrostatic energy,' Rindler and Denur, Am. J. Phys., Vol. 56 (9), Sept 1987


    http://www.geocities.com/physics_world/rindler-87.gif

    I mention it for a few reasons:
    (1) There is a myth going around that whenever anyone uses the term "mass" unqualified then it means "rest mass"/"invariant mass." This article is an excellant counter example and demonstrates how wrong that claim is.

    More examples are at
    http://www.geocities.com/physics_world/relativistic_mass.htm

    (2)It demonstrates with an interesting example that the mass of a complex object must be calculated using the stress-energy-momentum tensor.

    (3)I highly recommend reading it. It's also a pretty cool article. :-)

    Pete
     
  2. jcsd
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