Electric Field In Medium Clarification

  • Thread starter Danen
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  • #1
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Main Question or Discussion Point

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
 

Answers and Replies

  • #2
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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.
 
  • #3
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Thanks for clearing that up mfb.
 

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