Re: How can the refractive index of water be 1.33 when the dielctric con. = 80

Date: Mon Jan 7 17:42:38 2002
Posted By: Yaxun Liu, Grad student, Electrical and Computer Engineering, University of Waterloo
Area of science: Physics
ID: 1007172242.Ph

Message:


A good question. The dielectric constant (relative permittivity)
of water depends on frequency. It is about 80 below 1GHz, but
decreases as frequency increases. At light frequency it is
about the square of 1.33.
 http://www.kha.co.nz/ve2/dielectric%20.htm

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