1. The problem statement, all variables and given/known data What is the dB loss for a 3GHZ EM wave traveling through 2 meters of a medium with ϵ=1.5ϵ_0 and loss tangent = 9E-4? 2. Relevant equations Umm...I'm actually not sure. I can't find anything really relating these things at all. 3. The attempt at a solution My first attempt involved a decibel loss of about 6*10^6, so that can't be anywhere close to right. Every equation I see shows the wave number k being proportional to the frequency, and the EM loss being proportional to k.