Recent content by barton

Don't the changing induction fields create the radiating far fields, as described by Maxwell's equations?

The transformer next to your house is separating charge from your neutral to your hot wire 60 times a second. The hot wire becomes more positively charged than the neutral for half a cycle. Then as the cycle reverses, the hot wire becomes more negatively charged. Since they repel each...

In the near field, a hertzian pole has a changing electric field and a changing magnetic field, that are in both space and time quadrature. Are two sets of EM waves then created in the far field, one from the changing e-field, and one from the changing m-field?

I agree with your drawing at an intuitive level.

The distinction wasn't very clear in your previous post. And on the contrary, having a good mental model of the the math topic you are trying to reason is an absolute must. You just may not be sharing it with another person say, when you write out a formal proof.

Thanks for the references. I looked at both Griffiths and Corson & Lorraine, and both texts describe dipole radiation using retarded vector potentials. I was hoping for a description using just electric and magnetic fields.

I've been trying to learn the details of electromagnetic radiation from a hertzian dipole antenna, but all the information that I find only gives me a patchy understanding. This is what I have so far: Near-Field: Charges oscillate past each other in a center-fed hertzian dipole. This...

Why is it that I can't find a drawing on the internet of what the magnetic vector potential looks like around a current carrying wire?

There is. I was more curious about how voltage drops occur in the confines of an electric circuit. As long as you have the presence of nearby charges, the presence of nearby time-varying magnetic fields, or the presence of nearby moving magnetic fields, you will have electric fields set up in...

Xezlec, I found proof for your theory. See: Preyer, "Surface charges and fields of simple circuits", 1999 <http://galaxy.cofc.edu/pubs/AJP01002.pdf> , specifically section IV.B.

How do you give energy to a coulomb of charge?

Rutgers University, which surprisingly did not have Electromagnetic Fields and Waves as a requirement for graduation, nor any classes on transmission line theory. What evidence do you have for your "electron pressure" theory? Can you reference any papers or books?

I understand the fluid pressure analogy from the earlier posts, but what I'm looking for is a true answer, not an analogy. The reason why is because I just finished college with a degree in Electrical Engineering, however, my understand of circuit analysis seems to be built on a shaky...

Great question! I've been trying to figure out the same thing for myself. All of circuit analysis seems to be built on this idea of "voltage", but very little explanation is offered to what it truly is. In electrostatics, voltage is defined as the amount of joules of energy you would get...