Recent content by andresordonez

You must have a source of light (with the right frequency) in order for the amplitude to increase.

The forces between moon and Earth are equal in magnitude and opposite in direction. What may be confusing you is that the gravitational fields are different. The magnitude of the gravitational field of the Earth is g_E = \frac{G M_E}{r^2} where r is the distance to the center of the...

Sorry, I wasn't clear at all with my answer. What I tried to say was that I think (I am not sure of this, you should check the reference I gave you) that the Hamilonian does not always represents the energy of the system. I'm not sure if that was what you were asking at all! But I'm sure it is...

I think the answer is no, but I'm not sure, you should check section 2.7 of Classical Mechanics 3rd Ed, Goldstein. Try to improve your English writing and LaTeX skills, some of the words you wrote (like dude meaning doubt) I was able to guess just because my first language is Spanish.

When dealing with electrodynamics it is usual to use complex variables for the electromagnetic field while taking into account that the electromagnetic field is real and that at the end one has to take the real part of the complex solution for the field. However, what happens to compound...

Well, the extra \epsilon (relative permittivity) is just because in the paper it is assumed to be 1 (vacuum or air)

@bm0p700f: not more time than with a pencil, check this out: http://www.lyx.org/

Hi, I'm reading this article (you may need to register to view it, the registration is free though). http://www.sciencemag.org/content/312/5781/1780.full (can I post a link to this article in Dropbox so that people reading this don't have to register without getting an infraction from the...

Aha! I found it, there was an error in the memory allocation. Thanks Grieverheart! you pointed me in the right direction.

Thanks for the immediate reply! It sure looks like my problem. I just finished checking that I have all the declarations and function prototypes right. :( By the way, can you use an undeclared variable in C?!

Hi, I have an array that is partially disappearing from one line of code to the next and I don't have idea what could be causing this. The pseudocode of the relevant chunk of code goes like this: ... declare some 3d-dynamic arrays allocate memory for the arrays assign values to the...

I know, if he had just asked it wouldn't make sense to ask him that.

nitin, did found anything?

Hi, this may seem like something I should ask in the math forums but, as I came into this problem in atomic physics I'm confident that this is a question more appropriate here than in the math forums. So far I've been only able to find the common integral of a product of three spherical...

Yeah, sorry I should have posted it before; l and j are related like this: j = l \pm \frac{1}{2}