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visits member for 2 years, 9 months
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Aug
22
comment What is the concept behind …?
Concept of vector calculus.
Aug
21
comment Is there a quantity measured in kilogram seconds?
$\mathrm{kg}\cdot\mathrm{s}$ or $\frac{\mathrm{kg}}{\mathrm{s}}$? Anyway, it doesn't necessary to all combination have some interpretation.
Aug
9
comment Understanding the four fundamental forces of the standard model - are they magic
Clarke's Third Law: Any sufficiently advanced technology is indistinguishable from magic.
Jul
17
comment Can a web community write papers?
Yes, one of the most notable example I know: HoTT book. But it is underpopular now, as it should be.
Apr
16
comment Why do we see laser beams?
Thanks! There is also a Boom-Boom in Star Wars, so... the sci-fi isn't give much help in learning physics.
Apr
16
comment Why do we see laser beams?
So, in vacuum with a few particles in a unit of volume the laser beam would be almost invisible? (haven't found any photos of laser beam in space)
May
6
comment Why there are constant numbers in the universe?
I think this two questions on Math.SE would be interesting: Does π depends on the norm? and π in arbitrary metric spaces.
Feb
15
comment Usage of Schrödinger equation vs Madelung equations
And why do you think there are some superiority? I think they have same relation to Schrodinger as Euler equations to Newtons one.
Jan
26
comment Finding optimal angle for projectile, taking into account linear (Stokes) drag
Are you used Buckingham π theorem for making dimensionless coordinates?
Dec
8
comment Is there a small enough planet or asteroid you can orbit by jumping?
I want to see an answer!
Nov
23
comment Idea of precursors of the electro-magnetic waves
Yes, but I mean that for any wave frequency some of it would be observed much earlier.
Oct
29
comment Question about thermodynamic conjugate quantities
And what about $\langle X_i\cdot x_k\rangle = \delta_{ik}$? As I understood this implies only in the approximation of infinitesimal fluctuations. I'm right?
Oct
23
comment Can I find a potential function in the usual way if the central field contains $t$ in its magnitude?
Hi @Nosyt, and welcome to Physics Stack Exchange! I've updated you question and add some LaTeX. And if you have doubts in you calculations - add it. Without this it can't be checked on correcteness.
Oct
22
comment Energy can't be created or destoryed?
Scientist tends to the zero-energy universe which have no problem poping out of nowhere and nothing.
Oct
20
comment How can I explain why the weak nuclear interaction between individual nucleons is 'weak'?
-1: Stucked in the late 1700s.
Oct
17
comment How fast would a spaceship have to go to reach Alpha Centauri within a person's lifetime?
The relativistic factor is 1.003, if more precise. No more than a 60 and a half years.
Oct
17
comment How fast would a spaceship have to go to reach Alpha Centauri within a person's lifetime?
I've added some calculation for constant $2g$ accelaration.