Recent content by Crosshash

I'm a bit of a layman when it comes to this sort of thing, but from the literature I've read, it looks like most gradiometers utilise two magnetometers. Much of my understanding stems from this paper: http://library.seg.org/doi/abs/10.1190/1.2164759 but from the fairly limited articles on...

Whenever I've encountered measuring magnetic fields with magnetometers, they've typically been very large magnetic fields (up to a few T). Magnetic fields fall off rapidly with distance and so I generally figured that measuring weak fields at distances on the order of cm (let alone m) was very...

I'm trying to get my head around what this means exactly. I've plotted the graph to help verse me with the functions that I've derived. From the free electron model, the wavefunctions are treated as planewaves of the form \psi_\mathbf{k}(\mathbf{r}) = e^{i\mathbf{k}\cdot\mathbf{r}} Due to...

Yeah, okay, so I could use a photon or a Z for that interaction. So would it be accurate to say both diagrams would contribute to the probability amplitude?

Hey there, this isn't a homework / coursework question so I didn't think it should be posted in that section. I can't seem to find a source which explicitly tells you how to determine which bosons are used in reactions. I understand how to work out if a reaction is legal or not by using charge...

Would it be okay to bump this question? I have a similar question and I can't find these plots anywhere.

Hello everyone. I'm a third year Physics and Computer science student (predicted a 1st class - studying in the UK) and I'd like some advice on what to do in the future. I apologise in advance if this OP turns into a wall of text but I have tried to do some research prior to this post. I feel...

Ah crud, I completely forgot that's how you write Expectation value. so, just to confirm I have a grip on this, \langle x \rangle = \langle \psi \vert {x} \vert \psi \rangle = \int_{-\infty}^{\infty} \psi^* x \psi dx Is that right? Assuming the limits are from infinity to minus infinity...

I'm a complete noob with Braket and I've only just started getting to grips with it. For completeness' sake though (from the book I'm currently reading), I can't seem to find a definition for: \langle J_z \rangle Would this just be the "magnitude" of J_z? Thanks

Thank you for the reply. I'll give these a read over christmas and see how things go. I'll still check this thread to see if somebody else can contribute.

Hello there, I'm a second year physics student who like most, has exams around the start of the next year and as such, have started revising for my exams. The term has introduced new physics I wasn't initially familiar with such as Quantum mechanics and advanced differential calculus. Another...

Yeah, I'll pay him a visit with the rules (which I've just printed) on Monday. Thanks for the words. I'd like to see this thread stay open just so I can see what other people have to say on this topic. Thanks.

Guess I'll have to ask him next time I see him. I suppose the rules being obeyed make sense though.

I usually find myself asking a question here if I get stuck on a question. Is this plagiarism?

Ok, so \bigg[{-e^{-\frac {mv^2}{kT}}\bigg]_0^t will give me \lim_{t \to \infty}({-e^{-\frac {mt^2}{kT}} + 1) yeah? Sorry if this is annoying, I've never actually done something like this which seems a bit strange considering a question requires it. I appreciate the help.