Recent content by Shadrach Hepner

Ah, gotcha, that actually makes perfect sense. Thank you!

Oh, I didn't even catch that. Yeah, kilnvzol, that would be your reason for getting the first part wrong. Almost, you would still have to account for the value that is actually assumed by one tick mark. But you're right on removing the subtraction. Does it actually make sense why that is?

My guess is that you got the first part right but not the other two? The first part seems good, but then you go and start subtracting things. You were correct in counting the number of steps the flux increased immediately outside of the point charge, that was good. But then you notice that the...

Ok, so the reference to a dipole is only mentioned to denote the level of approximation. And the term I originally brought up, |rab|2, is simply the result of applying this dipole-approximation operator to the original state. Is that right?

Jilang, yes, this stuff starts on page 166. Fzero, thank you for the extensive response! Is there a tie to the existence of an actual dipole anywhere, or is the dipole analogy just because of the dot product between the bra and ket vectors, forming a similar shape?

I'm doing some personal research on how matter interacts with radiation. Specifically, I am looking through the treatment of Bransden and Joachain. I've taken two semesters of quantum in the past (a while ago), but now I'm coming across something that I've either never seen or never stopped to...

I'd rather ask them first, do you think you could message me an email address that I could send along to them?

You can also check out Climate: A Very Short Introduction. I've only read some of it, but it seems like a great way to see how interested you are. Oh, and it's only like 150 pages.

The inertia calculation assumes that there is equal mass on both the inner and the outer tube. Thus, the total inertia is (1/2)MR_1^2 + (1/2)MR_2^2, which he factored. That assumption should be valid, since the difference in mass wouldn't be much. ft92, what is the actual issue here? How far off...

Hey, recent physics grad from GT here. I can't really say much about Cornell, but GT's physics program is incredible, especially for undergrads (in fact, not entirely sure I'd go there for grad). The Society of Physics Students community is very tight knit for anyone who wants to get involved...

Purcell's a good one, but Griffith's is my personal favorite. If you're willing to deal with a little bit of hand-waviness for the sake of gaining physical intuition, you can't go wrong. It's also incredibly easy to read.