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seen Aug 27 at 19:43

Mar
10
awarded  Popular Question
Feb
9
awarded  Yearling
Oct
19
revised Uncertainty in momentum of an excited electron trapped in a box (1D)?
made a somewhat unnecessary but requested re-wording of the question
Oct
19
comment Uncertainty in momentum of an excited electron trapped in a box (1D)?
@DavidZ Pardon me for saying, but I don't understand why that's necessary to state, since the question does say "How do I calculate the RMS of the momentum from this?" and not "What is an RMS and how is it calculated from a pdf?", how does the question imply that I am asking what an RMS is?
Oct
19
comment Uncertainty in momentum of an excited electron trapped in a box (1D)?
@DavidZ I don't see anything about momentum on that page. I know quite well what RMS is and how it is calculated from a function. My question is about how to get the RMS of momentum when all I'm given is the wavefunction. The wavefunction is a function of position, so as far as I can tell, all I can get from this is the RMS of the position, not momentum.
Oct
19
comment Uncertainty in momentum of an excited electron trapped in a box (1D)?
@DavidZ I only tried my textbook, but I couldn't find anything about it. The only thing about RMS momentum that I could find on wikipedia was about thermodynamics.
Oct
19
awarded  Custodian
Oct
19
reviewed Approve suggested edit on Uncertainty in momentum of an excited electron trapped in a box (1D)?
Oct
19
asked Uncertainty in momentum of an excited electron trapped in a box (1D)?
Oct
16
comment Do electric and magnetic lines of force physically exist?
"As per my imagination any thing can't impose force on the other by not giving even a touch" You should know that what you call "touch" is just the electric forces of outer electrons acting at extremely small distances.
Oct
14
comment twin paradox question
Brilliant, thanks! My writing "his" was a typo. It was supposed to say "her". I edited.
Oct
14
accepted twin paradox question
Oct
14
revised twin paradox question
edited body
Oct
13
asked twin paradox question
Oct
7
comment How can light carry data if light has no mass, and data has mass?
Andy, if you want to know how electromagnetic radiation can carry information, look up amplitude modulation and frequency modulation.
Jul
14
comment How can an object with zero acceleration move?
@Joe Would it not be valid to say that acceleration is constantly 0?
Jul
12
comment Vectors with more than 3 components
@user793468 I'm glad you found it helpful. I gave two examples: color values in graphics programming, and spacetime coordinates in relativity calculations. In these two applications, these quantities are not only vectors, but they are even added, subtracted, multiplied (dot product), and scaled.
Jul
12
revised Vectors with more than 3 components
added 141 characters in body
Jul
12
answered Vectors with more than 3 components
Jul
4
revised What is the meaning of the third derivative printed on this T-shirt?
deleted 8 characters in body