Recent content by vaatmoly

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    Should Equation (30) be Revised to '2πfn=2nc'π/L'?

    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...
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    Should Equation (30) be Revised to '2πfn=2nc'π/L'?

    You have to get the book and read it. It's part of the derivation of Johnson noise. The derivation is several pages long.
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    Should Equation (30) be Revised to '2πfn=2nc'π/L'?

    Just above equation (30), it says "2πfn=2nπ/L". Should it be "2πfn=2nc'π/L" instead?
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    Graduate Question on Equation in Zee's Gravity in a Nutshell P107

    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?
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    Graduate Question on Equation in Zee's Gravity in a Nutshell P107

    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?
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    Thermal conductivity and specific heat capacity

    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.
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    Specific Heat / Thermal Conductivity

    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.