hi, i have seen on another topic here that the refractive index equals the square root of the dielectric constant. from datasheet values we have....(adsbygoogle = window.adsbygoogle || []).push({});

water refractive index = 1.333

dielectric constant = 80.1

Without even doing the calculation its obvious that the square root of 80.1 is not 1.333...im clearly missing something here, can somebody help me with this please?

Thanks

Tom

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Dielectric constant refractive index relationship

**Physics Forums | Science Articles, Homework Help, Discussion**