Missing factor of 2 pi in dielectric loss?

[ChrisGreen]

Hi. I am sure that this is something to do with it being Friday afternoon...but can anyone explain what I am missing here?

 

[anuttarasammyak]

I am not an expert, I am learning from your post and would like to refer (1.14.5) in
http://www.ece.rutgers.edu/~orfanidi/ewa/ch01.pdf
with 1/2 multiplied to RHS of formula in the last line.

 

[ChrisGreen]

Thanks. Yes, I see that my sums merely had the superficial appearance of reality!