Recent content by Dathascome

Explains it well here. http://books.google.com/books?id=6GIXMFpET4cC&pg=PA24&lpg=PA24&dq=on+the+spot+approximation+optically+thick&source=bl&ots=LtZR10wtAG&sig=dc_NWvYQQs8TpuPVWnTBMWnjmnc&hl=en&ei=HLauSaaKEse_tgfWqdCABg&sa=X&oi=book_result&resnum=1&ct=result

I think part of the reason that it's not so clear what I'm trying to do is that I'm not 100% sure what I need to be doing and I'm trying to figure that out. Here's the figure (since I got it from a journal article I thought it best to leave it unlabled). The solid line is say f(x,y=const)...

Hi there, This might be a sort of vague question, but if I have a plot say that I don't know the data points for, how can I go about trying to find a fitting function (basically a functional form) for the curves I'm looking at? Basically I have a figure I got from a journal paper that I want to...

Thanks much, I'll check them out.

Hi there, I was wondering if anyone had any recommendation on a good grad level cosmology book. Something dealing with more astrophysical things like structure formation. I'm using the Cole & Lucchin book for my class now and am not really a big fan of it. The other books I've found are either...

I've been trying for a bit to get gnuplot to run on my mac but it doesn't seem to work properly. I can get it to run but it doesn't seem to recognize x11 or aquaterm for some reason so I can't actually display and plots. When I type set term it brings up a list of available terms but neither of...

Thanks much Hurkyl. I changed it so that I initialized N when I first declared it and it seems to work just fine now. Despite that I'm not sure why still. Is the problem just that I tried to use it in A[N] before I specified what N was? I guess that makes sense then. Also I tried gcc -Wall with...

Hi there, I'm trying to right a program for class that 1st assigns random single precission floats from 0 to 1 to the elements 1-d array and then sums them up. Next I'm supposed to compare to this thing called the Kahan summation algorithm for different values of N (array size) using the...

Thanks much to all for the advice. I'm not really sure to what ends I will need to be programming (I'm just starting grad school for astrophysics in the fall), but I've already started plodding through on C, and will go at that for a bit and then try out some python. I was also wondering how...

Which programming language to learn? Hi there, I've decided to start teaching myself a programming language and it was recommended to me by two people both in the field I'm getting into (astrophysics) to learn either C or Fortran but preferably C. I was told C rather than C++ because C++ is...

Purely out of ignorance...I don't know much of these other free UNIX/ UNIX-type variants out there. What are some alternatives? Is Pidgin no good for IM'ing?

Thanks so much all for the suggestions. I'm planning on doing the deed some day this coming week:biggrin:

I'm planning on installing linux on my hard drive, having never done it before, and was doing a bit of research and found out there seems to be tons of different distributions of it! As one without so much knowledge of such things, I was wondering if anyone had any advice on what would be a...

I didn't read through all 11 pages so I hope no one said these. There are 3 types of mathematicians in the world...those who can count, and those who can't. My quantum mechanics professor a few years ago said this one. Q:Why doesn't Heisenberg live in the suburbs? A: Because he...

Yeah I tried that already too. Going though my schools library I tried to find the journal article online, I got as far http://scitation.aip.org/jetp/ which redirects to http://www.springerlink.com/content/119841/ but they don't seem to have articles as old as the one I'm looking for...