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Sep
18
awarded  Nice Question
Jul
2
awarded  Curious
May
22
awarded  Nice Question
Feb
26
awarded  Popular Question
Dec
27
awarded  Editor
Dec
27
revised How to prove the equivalence of two definitions of the scattering cross section
added 13 characters in body
Dec
27
comment How to prove the equivalence of two definitions of the scattering cross section
It's my fault, I forgot to mention differential. I'll edit it now.
Dec
27
comment How to prove the equivalence of two definitions of the scattering cross section
As much as I know both are called differential cross sections.
Dec
27
asked How to prove the equivalence of two definitions of the scattering cross section
Mar
16
accepted Relation between the determinants of metric tensors
Mar
4
asked Relation between the determinants of metric tensors
Nov
17
comment Are the Maxwell's equations enough to derive the law of Coulomb?
@Daniel Blay: I guess when you say usual tricks you mean taking a spherical surface around the point charge. The problem for me is that how do we know that the magnitude of the electric field from a point charge is spherically-symmetric. Besides how can we derive that there is no magnetic field (if it is possible to derive from Maxwell's equations)? :)
Nov
17
comment Are the Maxwell's equations enough to derive the law of Coulomb?
@DanilH: I meant 8 scalar equations. From the 4 Maxwell's equations two are vector equations.
Nov
17
comment Are the Maxwell's equations enough to derive the law of Coulomb?
Yes, I have already read this post, but my question is quite different.
Nov
17
asked Are the Maxwell's equations enough to derive the law of Coulomb?
Sep
22
accepted Deriving the action and the Lagrangian for a free point particle in Special Relativity
Sep
22
comment Deriving the action and the Lagrangian for a free point particle in Special Relativity
Thanks for the answer and for the correct spelling of Lorentz.
Sep
22
asked Deriving the action and the Lagrangian for a free point particle in Special Relativity
Jun
7
awarded  Supporter
Jun
2
accepted The number of independent variables in the Lagrangian and Hamiltonian methods in Classical Mechanics