Recent content by Old Person

Hi. That is an attempt at providing an answer or opinion. Thank you. It's been a few days with no other opinions. I'm going to assume the chances of obtaining any further replies will now be quite low and therefore may not be following the thread for much longer.

Hi. Could I just re-phrase the question again, please. What distribution of electrons do you obtain on the screen? If you don't know, that's fine. I don't know. I would be really grateful for some opinions. (I have to do some other things and may not reply as quickly - but will read...

I suspect there's been some overlap with the last reply I wrote and the recent one from @Vanadium 50 . Let's go with any particle you like. It has spin 1/2 and no charge or the effect of Lorentz force cancelled.

Hi again. This might be a fault in the phrases I used, sorry. I believe this is a USA based website and my English probably has differenet nuances. When I said: I need a check on the answer please. I think there should be only 2 spots on the screen at the end. That phrase was meant to...

Hi. Not today. The health and safety issues are worrying. I'm mainly just interested in the theory. Electrons are fundamental and those are the particles I would like to consider. You can use Silver atoms if you wish (I shouldn't imagine vaporised Silver atoms are good for our health...

Hi. Electrons are fundamental particles and should be simple for most considerations. Silver atoms need heating in a furnace chamber and could then can be streamed through a hole, preferably all done in a vaccum. That's equipment I am unlikely to get. I would prefer to use electrons...

Hi. Have you done any math? Yes. I thought it was sensible to keep the post short. Why would people have to read what I've done, it's boring. I am just asking the question: How many spots would there be on the screen? I know that's what was done. I don't want to use silver atoms. I...

Hi. Question as outlined in the summary. Note that there would be a Lorentz force if the particles were electrons. We can either live with that and take the consequence - or we can counter it by applying an E field across the SG (Stern-Gerlach) apparatus which will rotate with the SG...

Found it, thanks. I'm an idiot.

Hi. I'm not sure if this should be in Cosmology or Astronomy - a moderator can feel free to move it if required. Also the prefix (study level) may be an I or an A, you can change that, just thought I'd get a bigger audience with an I. I'm trying to read this paper: "The Inner Structure...

Hi. To be honest the question is too general to have one simple answer. To start with, British Universities don't often have a "grad program" in the same way that most American Universities will. In the US you would typically start with some courses and some examinations, in the UK...

Hi and thank you for even more replies. @fresh_42 ---> That's a good answer. I think there is one minor issue but it is minor. It won't be a problem unless 1/Cosh z is extremely unusual. You have assumed that 1/Cosh z must have a pole of some (finite) order at the point. There are...

Hi and thank you ever so much for your time and speed of reply @fresh_42 The answer is OK in that it does agree with the model answer. However, I'm not sure it was a valid method. I've just been looking over the insight article you suggested. It states, just above the result ...

I'm not sure if this should be in the calculus section or the anlaysis section. It's complex analysis related to integration around a contour. Can someone suggest a method to determine the residue of f(z) = ## \frac{1}{Cosh ( \pi z) } ## at the singular point z = i/2. Background...

Thank you. I'll look for that when I get to a library. Found: "Quantum Mechanics: A Modern Development" by Leslie E. Ballentine. No great need to reply - I'll assume it's that book unless you say otherwise.