1,449 reputation
1026
bio website
location
age
visits member for 3 years, 1 month
seen Feb 4 at 16:13

Learning from scratch


Jul
21
asked What is meant by “combinatorial background” in experimental high energy physics
Jul
15
asked A moderate introduction to Hanbury Brown Twiss interferometry in particle physics
Jul
15
comment Why is pseudorapidity defined as $-\log \tan \theta/2$
Thanks a lot, David. This is a great answer. I had been looking for an involved experimental perspective as well and this is better than most stuff I read.
Jul
15
accepted Why is pseudorapidity defined as $-\log \tan \theta/2$
Jul
14
revised Why is pseudorapidity defined as $-\log \tan \theta/2$
added 376 characters in body
Jul
14
asked Why is pseudorapidity defined as $-\log \tan \theta/2$
Jun
30
comment Does a static electric field and the conservation of momentum give rise to a relationship between $E$, $t$, and some path $s$?
It might interest you to look at the following question and the answers provided therein.
Jun
21
accepted Length of a curve in D dimensional euclidean space
Jun
21
comment Length of a curve in D dimensional euclidean space
@Fabian could you post that as an answer?
Jun
20
comment Length of a curve in D dimensional euclidean space
No it is not. A metric is defined for the locally flat space. For a one dimensional smooth curve we get the line element. Assuming a single parameter can define the curve, my question is to get the length from this parametrization. By "show that it works" I meant that you plugged and chugged for a circular segment on $D=2$ and verified it with familiar knowledge that a quadrant is a fourth of the perimeter.
Jun
20
revised Length of a curve in D dimensional euclidean space
edited body
Jun
20
comment Length of a curve in D dimensional euclidean space
@MBN for small typos, etc.. this server allows anyone to edit posts :)
Jun
20
comment Length of a curve in D dimensional euclidean space
That is true, but I have derived one gravely incorrect result in the past treating derivatives as fractions. I will think about this, thanks for answering.
Jun
20
comment Length of a curve in D dimensional euclidean space
@Fabian so is it a general statement that the D coordinates can be paramterized by single valued function $f:\mathbb{R}^D\rightarrow \mathbb{R}$ is this paramterization unique?
Jun
20
comment Length of a curve in D dimensional euclidean space
The 2D parametrization of a circular curve was the first thing I thought too. But this just shows that it works. Not much more
Jun
20
asked Length of a curve in D dimensional euclidean space
May
27
comment purely hypothetically, could a quantum being appear to be human? I ask for the purpose of research on a novel
One place to start would be to define a quantum being. Because technically, all humans as well as all life forms fall into that category. Anyhow I would suggest something like scifi.SE
May
25
comment Which person can handle falls from big heights better: lighter or heavier?
"Children make up a small percentage of passengers, so it follows they have a better chance of surviving." What?
May
23
comment Nuclear physics problem, Why do we use high weight atomic elements?
@Anna that is a correction I accepted in edit and the comment above. By "this explanation" i meant my initial explanation. Sorry if it confused you, English is not my native language but I try my best.
May
22
comment Nuclear physics problem, Why do we use high weight atomic elements?
@Ted Bunn Please see the clarificatory addition to my answer.It addressed why some nuclei are fissionable. You are right, of course. As for making a artificial fission reaction with slow neutrons, this explanation does not suffice.