Recent content by DaMasta345

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    Graduate Do the Relative Permittivity and Refractive Index of Water Match Up?

    Many textbooks and online sources give the relative permittivity of water as about 80 and the refractive index as 1.33. If you use the definition of refractive index to find the speed of light in water, you will find v = c/n ~ 2.56e8 m/s. However, if you use the equation to find the speed of...
    • DaMasta345
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    • Electromagetism Index Match Permittivity Refractive index Relative Relative permittivity Water
    • Replies: 1
    • Forum: Optics