Recent content by VictorVictor5

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    Coupled PDEs - all 4 Maxwell's equations?

    Greetings all, Quick question. I know that all 4 Maxwell's equations are said to be first-order, coupled PDEs, where each equation has an unknown field. I see that with Faraday's and Ampere's law, because, E and H appear in each of those equations. But Gauss' laws, I'm not seeing that...
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    Discrepancies with Maxwell's Eqns - vector potentials

    Great - thanks so much for your help! VV5
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    Discrepancies with Maxwell's Eqns - vector potentials

    DuckAmuck, First, thanks for the reply. Question for you. While the ratio you provided would work, and given that -j * -j = well, j^2, = -1 and the equation would work, but quick question. The ratio you provided - physically what would that mean? Thanks again! VV5
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    Discrepancies with Maxwell's Eqns - vector potentials

    Greetings all, Trying to resolve a discrepancy with vector and scalar potentials with Maxwell's Equations, specifically Ampere's law. In my E&M textbook (Balanis, 1989, Eqn 6-17), Ampere's law with a magnetic vector potential and electric scalar potential can be expressed as E=...
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    Undergrad Understanding superposition for a layer model

    Greetings all, This question can cover many sub-forums here, but I'll put it in General Math since I believe it deals with superposition. Now, I am studying a layered-earth model for programming purposes, and what I mean by that is, for example, we say air is one layer, grass is another...
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    Graduate Discretizing Integrals for Scientists

    Thanks for your help!
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    Graduate Discretizing Integrals for Scientists

    Why do I have it reversed? Good question - not too sure! That' why I threw the question on the boards. So is the discretization I stated correct? I'm still a bit confused. Thanks!
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    Graduate Discretizing Integrals for Scientists

    Mathman, Sorry about the confusion - trust me I'm new at discretization too. But first, thanks for the response. Basically, I'm seeing if there's a way to represent these integrals in summation form via the Phi equations. What these "Phi" equations represent is the relative responses...
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    Graduate Discretizing Integrals for Scientists

    Greetings all, I looked this up in the forums but there didn't seem to be a response. I have the following equation: ##i\sum\limits_{n = 1}^N {{\sigma _n}} \left[ {\int\limits_{{\zeta _{n - 1}}}^\infty {\phi \left( \zeta \right)d\zeta - \int\limits_{{\zeta _{n}}}^\infty...
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    Faraday's vs Ampere's Laws and current density

    Thanks to both!
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    Faraday's vs Ampere's Laws and current density

    Greetings all, I know that Faraday's and Ampere's law are related by M.E., but can I say the following? By Faraday’s Law, a time varying magnetic field induces an electromotive force, which produces an electric current density in a media. Up until EMF, that's Faraday's, but is the rest of...
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    Basic question on wave equation - need a reminder

    Thanks, that cleared it up! VV5
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    Basic question on wave equation - need a reminder

    Greetings all and new to the forum here. It's been many years and I've forgotten how to do it, and it should be a basic question, but assuming we have an equation Ex=E_0*cos(wt-kz), how do we translate to sine? I've seen it written sin(kz-wt) or sin(wt-kz), but I've just plainly forgotten how...