Recent content by vaatmoly

Yes, sure. We are considering photon modes in a transmission line(an electromagnetic system in one dimension). The transmission line has 2 photon modes(one propagating in each direction) of frequency "2πfn=2nπ/L" where L is the transmission line length, c' is the propagation velocity on the...

You have to get the book and read it. It's part of the derivation of Johnson noise. The derivation is several pages long.

Just above equation (30), it says "2πfn=2nπ/L". Should it be "2πfn=2nc'π/L" instead?

Thanks. Since we are on this book, I have another question: on page 306, lines 9 and 11 from the top, should B(t,r) and A(t,r) have square roots on them?

In Zee's Gravity in a Nutshell P107, 13 lines from the bottom, for a sphere of radius a, should the curvature G be 1/(a^2) instead of a^2?

They can be somewhat related. For metals where thermal conductivity is dominated by free carriers, thermal conductivity(k) and specific heat(c_v) can be related by: k=(1/3)c_v*v*l, where v is the mean carrier speed and l the mean free path.

They can be somewhat related. For metals where thermal conductivity is dominated by free carriers, thermal conductivity(k) and specific heat(c_v) can be related by: k=(1/3)c_v*v*l, where v is the mean carrier speed and l the mean free path.