Permitivity, and relative permitivity

  • Thread starter neu
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  • #1
neu
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Homework Statement



For a plane em wave in vacuum can write [tex]k=\frac{w}{c}[/tex]

what is the equivalent relation in a dielectric?

Homework Equations



[tex]\frac{1}{c^2}={\epsilon}{\mu}[/tex]


The Attempt at a Solution



[tex] k=\sqrt{{\epsilon_{r}}\epsilon\mu}.w[/tex]

This right?
 
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Answers and Replies

  • #2
Meir Achuz
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Yes, but you could keep the c instead of epsilon0 and mu0.
 
  • #3
neu
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ok so: [tex] \frac{1}{c}=\sqrt{\epsilon_{0}\mu_{0}}[/tex]

so how is [tex]\epsilon[/tex] and [tex]\mu[/tex] related to c?

is it [tex]\frac{n}{c}=\sqrt{\epsilon\mu}[/tex]?
 
  • #4
Meir Achuz
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ok so: [tex] \frac{1}{c}=\sqrt{\epsilon_{0}\mu_{0}}[/tex]

so how is [tex]\epsilon[/tex] and [tex]\mu[/tex] related to c?

is it [tex]\frac{n}{c}=\sqrt{\epsilon\mu}[/tex]?
Yes, if you mean [tex]\epsilon=\epsilon_r\epsilon_0.[/tex]
 

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