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Electric Field In Medium Clarification

  1. Oct 13, 2012 #1
    So I just wanted to clarify:

    Because D = ε0E + P

    P being zero in vacuum
    and ∇D is constant regardless of medium

    if D was originally in a vacuum, the corresponding E would be greater than if it were in an insulating medium. So,

    E in vacuum > E in medium
     
  2. jcsd
  3. Oct 13, 2012 #2

    mfb

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    Not if you use materials where P is opposed to the direction of the electric field. That can happen in metamaterials for oscillating electromagnetic fields of specific frequencies.
     
  4. Oct 14, 2012 #3
    Thanks for clearing that up mfb.
     
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