886 reputation
58
bio website
location Ukraine
age
visits member for 3 years, 9 months
seen Apr 14 at 0:58

Sep
18
answered What is special about the ratio $Q/V$ that we give it the name Capacitance?
Jun
30
awarded  Yearling
Jul
15
awarded  Nice Answer
Jun
30
awarded  Yearling
Nov
27
awarded  Caucus
Oct
18
comment Rotating hoop in Relativity
The case of ROLLING hoop is an interesting one =) Its observable shape is ellipse.
Sep
2
awarded  Enlightened
Sep
2
awarded  Nice Answer
Jun
30
awarded  Yearling
Jun
14
comment How to solve Poisson equation in electrodynamics?
Well, noticing that every component of the equation $\Delta \mathbf{A} = -\frac{4 \pi}{c} \mathbf{j}$ satisfies Poisson-type equation, we immediately write down the solution. UPDATE: LuboŇ° wrote the same thing above =)
Nov
16
comment How does force relate to velocity
Newton's second law is what you're looking for =)
Nov
10
answered What is the math knowledge necessary for starting Quantum Mechanics?
Nov
2
comment Definition of “direction”
If you are comfortable with the vector concept, there should be no problem with the meaning of "direction".
Oct
6
comment What happens if you x-ray an x-ray?
since an x-ray is nothing but an electromagnetic wave (with high frequency), what do you think would happen?
Sep
30
answered What does it take to understand Maxwell's equations?
Sep
26
awarded  Commentator
Sep
26
comment How did Feynman derive the physics of medallion vs. plate wobble rate?
Take a look at this article. The authors present an elementary explanation for the two-to-one ratio of wobble to spin frequencies. UPDATE: In case you don't have easy access to the AJP, here it is: article.
Sep
2
answered Rainbow around Sun
Sep
1
answered What determines the apparent radius of the rainbow?
Aug
30
answered What is the origin of the Dirac delta term in the dipole electric field?