TSny's latest activity

The flux through the spherical surface without including ##\partial_t A## is ##(q_o-I_ot)/\varepsilon_o##. The flux of ##-\partial_t...

I used Mathematica to plot the field. I definitely agree. In the case of opening the switch, you have resolved the apparent paradox...

This all sounds good. If the current is switched off by opening a local switch, things are quite complicated, as you have very nicely...

Good. Yes, I think so. Your two different graphical solutions with three reflections are very insightful!

Your diagrams appear to show 3 reflections before the rays form an image at S.

How many reflections are you considering?

If the current suddenly stops, ##\partial_t \mathbf{A}## will no longer be zero everywhere. Immediately after the current stops, there...

At which point of the paper do you believe the author takes ##\delta \int L \;dt = 0## for granted? The paper starts with d'Alembert's...

You're not missing anything. When I posted #9, I was apparently missing something - my brain :oldsmile: The magnetic field in my...

Hello fellow Physics enthusiasts, I am an aeronautical engineering graduate (Bachelor's) who is interested in Physics and Mathematics...

I get the same result. A nice approach is to use momentum conservation in an inertial frame moving with the stream of water. After...

Yes. That's right. In my example, the electric and magnetic fields at any point are time independent. So, no signal propagation can occur.

The potential at the field point ##p## at time ##t## is given by the retarded-time expression ##\phi(r, t) = \large...

Hello, thank you for the response! I should have known better, but wasn't considering even and oddness. I realize now that the first...

In the second line, the first integral has an integrand that is odd in ##y##. You cannot replace ##\int_{-\infty}^{\infty}## by...