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seen Apr 3 at 10:06

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 =)
Jun
2
revised How did Feynman derive the physics of medallion vs. plate wobble rate?
added 13 characters in body
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
revised How did Feynman derive the physics of medallion vs. plate wobble rate?
added 138 characters in body
Sep
26
answered How did Feynman derive the physics of medallion vs. plate wobble rate?
Sep
2
answered Rainbow around Sun
Sep
1
answered What determines the apparent radius of the rainbow?