TSny's latest activity

Your homework statement mentions dielectrics. But the actual problem statement does not mention dielectrics. It's not clear to me...

It appears to me that Callen’s deduction of ##dQ = T dS## for quasi-static processes is essentially contained in sections 1.8 and 2.1...

Hey guys! Sorry for jumping into the thread after so long, but I came across a link that might be of interest to you. I recently...

@palaphys, for an intuition, it helps to visualise flux lines. In the following diagram, the magnitude of the flux through the loop due...

As was pointed out by @QuarkyMeson, no, because it is only part of the field. However, Maxwell’s equations admit causality-reversed...

Longitudinal electric field isn't an observable, E is. (Save some electrostatic near field stuff when E is approx ##E_{\parallel}## and...

I'm a bit rusty so forgive me -- but in both of those examples, the magnetic field ##\mathbf{B}## is a constant* (in the lab frame), so...

I used the approximation from the 3,4,5 triangle. Also, no I am not familiar with lagrangian mechanics I'm still in HS. Here's the...

👍 I get the same result. I found the calculation to be fairly tedious. Easy to slip up.

In your example in post #1, ##\large \frac{\partial A_y}{\partial y} \neq 0## for points along the x-axis. So, ##\nabla \cdot \mathbf{A}...

That's not the reason. The assumption is more general. Free charge inside the volume of a dielectric material would have to be...

Intuitively, the reason that ##\sigma_b## is negative is because the field of the positive, external charge ##q## tends to pull negative...

@kuruman has addressed your questions. But I’ll add a few additional remarks. There are two sentences in your quote. Are you asking why...

Let's take another look at your nice steady-current calculation in #5. You considered an arbitrary point ##p## at a distance ##r## from...

Yes. Thank you.