34,512 reputation
1357135
bio website ellipsix.net
location State College, PA
age 28
visits member for 3 years, 5 months
seen 3 hours ago

I'm a graduate student in physics doing research in high-energy particle physics. I also have a hobby interest in computer programming.

You can find me on Twitter, or check out my blog and personal website!

For matters not related to Stack Exchange, I can be contacted by email at stack@ellipsix.net.


5h
comment A free jet of liquid (incompressible) strikes a wedge as shown in figure below
Hi PleaseHelpMeOut, and welcome to Physics Stack Exchange! This is not a homework help site, so the sorts of questions you're asking are off topic. If you would like to post questions here, please take a look at our homework policy and make sure you're asking conceptual questions after having shown some effort to work through the problem.
19h
comment Normalizing the sum of wavefunctions and calculating probabilty - understanding concepts
(1) It's not true that $\phi_1(x)\phi_1^*(x) = 1$. The product $\phi_1(x)\phi_1^*(x)$ is a function, which will in general vary with $x$. Only when you integrate it do you get 1. (2) I had made a mistake by omitting the absolute value signs; $a^*a = \lvert a^2\rvert$, not $a^2$, but accounting for that, yes that is the reason you get $\lvert a\rvert^2 + \lvert b\rvert^2 = 1$. (3) Exercise for the reader :-) Try the procedure I showed you on that function and see if it's normalized.
19h
revised Normalizing the sum of wavefunctions and calculating probabilty - understanding concepts
put in absolute value signs
21h
answered Normalizing the sum of wavefunctions and calculating probabilty - understanding concepts
1d
revised What's the purpose of the speed of light in $E = mc^2$?
fix title and tags
1d
revised Does the energy-time uncertainty principle require energy levels to have finite width?
fix title
1d
comment Why don't we substitute for $p$ in $E = pc$?
It might also be worth mentioning that $\gamma\to\infty$ as $v\to c$.
1d
revised Does the unit of Inertia include radians?
fix formatting
2d
comment Does the mass of a star change as it collapses into a black hole?
I've edited your question to improve the wording. Could you verify that it still accurately reflects what you wanted to ask?
2d
revised Does the mass of a star change as it collapses into a black hole?
improve phrasing and title
2d
comment Angular momentum Bohr's model
@Danu this case seems more like an appropriate use of a downvote, rather than a flag.
2d
revised Why does Gauss's law work for a charge off center in a spherical surface?
improve title and add tag
2d
comment Solving oscillation-related problems using energy
Hi lbicsi, and welcome to Physics Stack Exchange! This is a site for focused questions about specific concepts; just asking for links to documentation/tips/explanations in general is not on topic here. (Also, the sample problems don't seem to contribute anything useful to your question in its current form.) If you can edit your question to ask something specific, I'll be happy to reopen it.
2d
comment How Are Galaxies Receding Faster Than Light Visible To Observers?
By the way, it's generally better to edit your existing answer, rather than deleting and posting a new one (unless the new answer is really completely independent of the original one).
2d
comment RMS Free Path vs Mean Free Path
let us continue this discussion in chat
2d
comment RMS Free Path vs Mean Free Path
@Greg that starts from the assumption that free path lengths follow an exponential distribution, as opposed to what I've assumed here, that free path times follow an exponential distribution. That accounts for the difference. It's not immediately obvious to me which assumption is physically accurate, though.
2d
revised How are electric flux calculations not double integrals?
edited tags
2d
answered How are electric flux calculations not double integrals?
Apr
14
revised What's the difference between $10\%$ of $10\text{ cm}$ and $1\text{ cm}$?
fix title
Apr
14
awarded  Famous Question