I have a 2-dimensional field of values (they are actually heights of a surface) and I want to compute a correlation function or some sort of correlation parameter. I have seen something similar done with galaxies and you end up with something like the probability of finding a galaxy at a...
There seems to be a good source here:
http://www.cs.cf.ac.uk/Dave/AI2/node194.html
But my problem is understanding the summation. What I am trying to do is calculate ellipticites and orientation angles of images using their second order moments of inertia.
My images are in matrix...
Hello, are any of you guys still around? I'm a little stuck on a similar problem. There seems to be a good source here:
http://www.cs.cf.ac.uk/Dave/AI2/node194.html
But my problem is understanding the summation. What I m trying to do is calculate ellipticites of images using their...
P.S. Just to add, Physics pays a lot more than Chemistry at the academic level, which I suspect was the motivation for the Chemist to switch to Physics at my University.
Hello,
I have a lecturuer at University that worked in the Chemistry deparment and recently swapped to Physics; as there is a lot of overlap he could get away with this. I studied a combination of Physical Chemistry and Physics as an undergraduate and I would say that my chemistry courses...
Maybe this is a trivial question, I'm not sure, but when you measure linearly polarised light, such as that in the CMB which component of the light is 'measured'.
By this I mean is it the oscillating electric field or the oscillating magnetic field that is oscillating in the direction of the...
Really? I had the impression that Cosmology attracted a lot of mega-clever people so assumed publications would be the norm. It's not as fabulous as it sounds either as my first paper is on stellar theory, not Cosmology and my second is not a certain event at the moment (although I am working...
I have one that is being published soon; I'm just waiting for the supervisor to release it to a journal. I am also hoping to get a 2nd out of my Summer Project this year.
Ok, thanks for the advice, this was all very helpful.
You seem to know a lot, you have done a PhD in Cosmology?
Which other groups do you think are worth applying to? Durham, Portsmouth?
Thank you for the quick and reassuring reply. My percentage is 68 and I'm studying Natural Science, my better grades are in topics like Cosmology (78), Mathematical Methods (70), Communication skills (74). My 'bad' grades are in topics like Chemistry and Stellar Physics; and when I say bad I...
I am just going into my fourth year of a 4 year MSci course and have got my results from my third year. It's not as good as I had hoped and my average is a 2.1.
I know that Cosmology is very difficult to get into and PhD's are over subscribed. I was also hoping to work at one of the...