Recent content by armis

Thanks! This was most helpful. I didn't mind the length and I wished it was twice as long! Did you do your PhD in your home country or abroad?

Thanks everyone for the interesting stories so far! It is really helping me I find these points particularly important:

Thanks ModusPwnd :smile: In what area did you work if I may ask? Were you in a self-funded position?

Thanks, you really have a story to tell! Very interesting

Thank you twofish-quant :smile: When you just started a PhD where you aware of your possibilities after finishing it outside academia? Also since you did a lot of programming your experience might be easily transferred elsewhere, is that correct? I mean even outside the realm of physics.

Greetings I have a dilemma, hopefully some of you can help. And yes I did research a lot about this on google but I think a new discussion is more helpful. Where did you get your PhD in? Was it worth it? What are the options outside academia? I have an opportunity to get a PhD position...

Greetings Next semester I'll have solid state physics, statistical physics and and introductionary course in elementary particles. So I was wondering maby those of you who had those subjects could recommend me some books. I really liked books by Griffiths so far. Especially the one on...

look up the photoelectric effect

What is the relationship between the wavelength of the incident light and the energy of the emitted electrons?

So what you are saying is that I can already write the operator within the "average" brackets like this < \hat{Q} > ? I thought I was not allowed to do that and had to write < Q > instead and only once I am trying to compute the expectation value I...

Cool, I like this kind of approach :) Well, I think it would look like this, right? \sigma^{2}_{H}=\langle(H-{\langle}H{\rangle})^2\rangle=\langle\psi\mid(\hat {H}-{\langle}H{\rangle})^2\psi\rangle Notice I didn't write the hat on H in the second expression ( the part I don't...

This I know Is there a difference? I think there is none. Feel free to correct me Let me clarify. First of all I don't understand why in this expression \sigma^{2}_{Q}=\langle(\hat{Q}-{\langle}Q{\rangle})^2\rangle we use the operator Q instead of the value Q. For example if we make repeated...

There are two things I don't understand here: Firstly, why in the standard deviation expression we use the Q operator instead of the Q value itself? Writting Q seemed more natural and then in the next expression I would just stick the corresponding operator. Which would lead to the same result...

:smile: Yep, if the wavelength is 485nm it should be 4-2

thanks