Recent content by Happle

Just got back round to this - That approximation helps a lot, thanks sophiecentaur.

It looks like it will - unfortunately my supervisor came round yesterday and asked me to check my values against something I hadn't thought of and it turns out I was getting the wrong values anyway (always to way ). I've been trying to find the fault since yesterday so haven't had a chance to...

Thanks - I do tend to use a phrasing that no-one else would (not to mention sometimes creating my own terminology that is in direct contradiction with the standard) I'll work on it :smile:

I was only looking for the frequency of the beat so I could tell my program to stop calculating points outside that range - it takes time to work out each point of the graph and if there is repetition I don't need to spend the time calculating more than one of the subunits. I've got a program...

It's more that I want to make sure I plot my graph over a large enough range to see all features. I was assuming the sum of multiple waves would have a period that it repeats over, which would give a characteristic frequency (f1-f2 in the simple two wave case). If there were some nice way...

The physics is a bit odd - it's looking at the background of a moving particle in it's rest frame. It came from a Nature journal article so I'm pretty confident it's legit. (If your curious, search for "Quantum flutter of supersonic particles in one-dimensional quantum liquids" it's an...

I'm looking the expectation value of a quantum mechanics operator, measured at a point in time, that is represented as the sum of some waves with associated amplitudes. <P(t)> = constants - [sum(a1*exp(i*w1*t) + a2*exp(i*w2*t) + ... )] The sum is supposed to oscillate before trailing to...

@mickybob By the "number of frequencies" I mean the number of different waves I'm summing - if I make slight changes in my system, more wavefunctions are relevant and I have to do the same analysis with more functions. My system should have an overall oscillation (according to a journal...

I'm modelling a system that (at the most simple level) is a sum of superimposed waves with different amplitudes. I'll spare all the details but I'd like a nice "rule of thumb" for a beat pattern of multiple waves. The 2-wave beat pattern is obviously nice and easy, but when I was trying to...