User Kostya

264 votes

Do we know why there is a speed limit in our universe?

answered Jan 20, 2016 at 18:02

68 votes

What is the difference between implicit, explicit, and total time dependence, e.g. $\frac{\partial \rho}{\partial t}$ and $\frac{d \rho} {dt}$?

answered Apr 26, 2011 at 10:12

52 votes

Calculus of variations -- how does it make sense to vary the position and the velocity independently?

answered Jan 14, 2011 at 17:03

51 votes

Accepted

What is the usefulness of the Wigner-Eckart theorem?

answered Feb 8, 2011 at 13:53

46 votes

Accepted

Why does one experience a short pull in the wrong direction when a vehicle stops?

answered Feb 28, 2011 at 16:20

39 votes

What physical evidence is there that subatomic particles pop in and out of existence?

answered Feb 2, 2015 at 12:43

38 votes

What is so special about speed of light in vacuum?

answered Oct 11, 2013 at 18:38

36 votes

Paradox regarding phase transitions in relativistic systems

answered Sep 16, 2019 at 10:44

35 votes

Do photons gain mass when they travel through glass?

answered Dec 14, 2010 at 14:25

34 votes

Accepted

Why can't a single photon produce an electron-positron pair?

answered Mar 28, 2012 at 12:48

25 votes

Interference of polarized light

answered Feb 9, 2011 at 16:53

22 votes

If the observable universe were compressed into a super massive black hole, how big would it be?

answered Dec 14, 2010 at 14:45

20 votes

Accepted

Why is Higgs Boson given the name "The God Particle"?

answered Jul 4, 2012 at 16:14

20 votes

Accepted

What would happen if Large Hadron Collider would collide electrons?

answered Feb 10, 2013 at 22:04

20 votes

Accepted

At CERN - What do you call the moment (event) particles crash together in the particle accelerator?

answered Jul 22, 2013 at 15:58

18 votes

Vacuum Expectation Value and the Minima of the Potential

answered Sep 1, 2013 at 22:49

18 votes

Accepted

Guessing what a simple partial differential equation is describing physically

answered Nov 28, 2011 at 22:13

17 votes

Since radioactive material decays how is it possible that there is any left after 4.5 billion years?

answered Mar 18, 2011 at 16:19

16 votes

Accepted

Are water waves (i.e. on the surface of the ocean) longitudinal or transverse?

answered Mar 8, 2011 at 12:18

15 votes

What physics does occur at short distances in QED?

answered Feb 20, 2011 at 20:35

15 votes

Why does the (relativistic) mass of an object increase when its speed approaches that of light?

answered Dec 6, 2010 at 15:48

14 votes

Accepted

Meaning of the Poisson bracket as a coordinate transformation

answered Feb 28, 2011 at 10:37

14 votes

Accepted

What are the alternatives to the Higgs mechanism?

answered Feb 12, 2011 at 23:16

13 votes

Your favorite Physics/Astrophysics blogs?

answered Jan 21, 2011 at 10:33

13 votes

Accepted

Can energy be taken out of the QFT vacuum?

answered Jul 19, 2012 at 22:04

12 votes

Zero magnetization of spin model without external magnetic field

answered Dec 16, 2010 at 15:37

11 votes

Software for physics calculations

answered Dec 26, 2010 at 19:14

11 votes

Accepted

A pedestrian explanation of Renormalization Groups - from QED to classical field theories

answered Jan 7, 2011 at 17:12

10 votes

Why is there a breakdown in Kolmogorov scaling in turbulence?

answered Feb 24, 2011 at 10:19

10 votes

How does Fraunhofer diffraction depend on the orientation of the sides of a lens?

answered May 16, 2011 at 14:56

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196 Answers

Do we know why there is a speed limit in our universe?

What is the difference between implicit, explicit, and total time dependence, e.g. $\frac{\partial \rho}{\partial t}$ and $\frac{d \rho} {dt}$?

Calculus of variations -- how does it make sense to vary the position and the velocity independently?

What is the usefulness of the Wigner-Eckart theorem?

Why does one experience a short pull in the wrong direction when a vehicle stops?

What physical evidence is there that subatomic particles pop in and out of existence?

What is so special about speed of light in vacuum?

Paradox regarding phase transitions in relativistic systems

Do photons gain mass when they travel through glass?

Why can't a single photon produce an electron-positron pair?

Interference of polarized light

If the observable universe were compressed into a super massive black hole, how big would it be?

Why is Higgs Boson given the name "The God Particle"?

What would happen if Large Hadron Collider would collide electrons?

At CERN - What do you call the moment (event) particles crash together in the particle accelerator?

Vacuum Expectation Value and the Minima of the Potential

Guessing what a simple partial differential equation is describing physically

Since radioactive material decays how is it possible that there is any left after 4.5 billion years?

Are water waves (i.e. on the surface of the ocean) longitudinal or transverse?

What physics does occur at short distances in QED?

Why does the (relativistic) mass of an object increase when its speed approaches that of light?

Meaning of the Poisson bracket as a coordinate transformation

What are the alternatives to the Higgs mechanism?

Your favorite Physics/Astrophysics blogs?

Can energy be taken out of the QFT vacuum?

Zero magnetization of spin model without external magnetic field

Software for physics calculations

A pedestrian explanation of Renormalization Groups - from QED to classical field theories

Why is there a breakdown in Kolmogorov scaling in turbulence?

How does Fraunhofer diffraction depend on the orientation of the sides of a lens?