276 reputation
13
bio website
location Berlin, Germany
age 44
visits member for 2 years, 11 months
seen May 30 '13 at 16:47

Mar
11
awarded  Commentator
Mar
10
answered Regarding Electromagnetic plane wave and Maxwell's equatins
Mar
10
comment Regarding Electromagnetic plane wave and Maxwell's equatins
@Insig: I removed the general-relativity tag; this has nothing to do with general relativity; in fact it's not even specifically related to special relativity; it's just electrodynamics and vector calculus.
Mar
10
comment Regarding Electromagnetic plane wave and Maxwell's equatins
@Insig: It doesn't if you link both questions to each other to avoid duplication of efforts.
Feb
4
awarded  Editor
Jan
21
comment What does this quote about the four dimensional divergence of an antisymmetric tensor mean?
@user7530: Sorry, I forgot to check whether it was a vote to migrate -- my bad. As a physicist, I doubt that physicists are better equipped to answer a question about the definition of a tensor, because they tend to think of tensors as arrays of numbers that follow certain transformation rules :-)
Jan
21
comment What does this quote about the four dimensional divergence of an antisymmetric tensor mean?
There's a close vote with reason "off topic". It's not off topic, it's a question about mathematical terms. If you want to close it, "not a real question" seems more appropriate, which has among its subreasons "overly broad [...] and cannot be reasonably answered in its current form". Also, I'd ask everyone who's downvoting or voting to close to consider whether they'd be doing the same if the question were written in correct English.
Jan
20
comment What does this quote about the four dimensional divergence of an antisymmetric tensor mean?
I didn't downvote, but I suspect the fact that you're getting about one downvote per minute has to do with the fact that you're asking about terms that you could read up on at Wikipedia. Perhaps you won't be able to understand the Wikipedia articles, but that's because you need some other concepts to understand these terms and an answer on this site can't teach you all those concepts if you don't already have them.
Dec
14
comment Finding the electric field for a shell of charge
@FrankH: Yes, that's also the one I was referring to; I found it from the FAQ you linked to.
Dec
14
comment Finding the electric field for a shell of charge
@FrankH: I'm sorry, I wasn't aware that you have a different homework policy here; I originally saw this question on math.SE and followed it here when it was migrated. It's rather ironic that the FAQ you linked to (or rather the meta thread that it links to) quotes an obsolete thread on meta.math.SE to argue for this policy, which is not the current math.SE policy on homework (which is basically that everyone deals with it as they see fit).
Dec
12
answered Finding the electric field for a shell of charge
Oct
15
comment Solving the Schrödinger equation for the double-slit experiment
Note that in most languages that use diacritics (including German), the letters with and without diacritics have only a historical connection and are pronounced quite differently nowadays. Thus leaving off the diacritics is about as bad a misspelling as changing the vowels completely; you might as well have written "Schrudinger". :-) If you can't produce letters with diacritics, you can always copy them from the Web, e.g. from the corresponding Wikipedia articles (which you can find by Googling the names without diacritics :-).
Aug
25
awarded  Yearling
Jul
24
answered Can one make a ball rotate around a vertical axis using only a combination of horizontal axis rotations?
Oct
25
answered Transmission and reflection
Sep
20
comment Hankel function in terms of planewaves
Here's the post at math.SE.
Sep
3
comment 3D Quantum harmonic oscillator
Much as I'd like to answer the question, I think it belongs on physics.SE. The answers are well-known to physicists. See e.g. en.wikipedia.org/wiki/….
Aug
25
awarded  Teacher
Aug
25
answered How does the period of a temperature fluctuation affect the depth to which the ground freezes?