Richard's user avatar
Richard's user avatar
Richard's user avatar
Richard
  • Member for 7 years, 4 months
  • Last seen more than a week ago
  • California, USA
16 votes

Why are diamond shapes forming from these evenly-spaced lines?

10 votes
Accepted

Deriving $\nabla_\mu \nabla_\sigma \mathcal{K}^\rho=R^\rho_{\sigma\mu\nu}\mathcal{K}^\nu$

6 votes
Accepted

What is the difference between invariance and covariance?

6 votes

Necessity to consider the square of Four Momentum

6 votes

Cooling a cup of coffee with help of a spoon

5 votes

Maximally symmetric spaces

5 votes

Is the "cosmological constant tension" the prime reason that we believe the expansion of the universe is accelerating?

5 votes

Books for general relativity

5 votes

Why don't electrons crash into the nuclei they "orbit"?

4 votes

Why does kinetic energy increase quadratically, not linearly, with speed?

4 votes
Accepted

Sonority of metals

3 votes

What is a Borel subalgebra?

3 votes

Quantum field theory self-study

3 votes
Accepted

Magnetic fields and closed loop

3 votes
Accepted

Landau Lifshitz' field theory book question

3 votes

Electromagnetism and differential forms

3 votes

Finding the dimensions of a spacetime given the Riemann tensor

2 votes
Accepted

Reference request for Gribov ambiguity

2 votes

Degree of freedom in Lagrange's formalism

2 votes

Torsion tensor in Relativity

2 votes

ZAMO's trajectory near a Kerr Black Hole?

2 votes

What makes a standing wave a wave?

2 votes

Why does the comb attract the pieces of papers if they're neutral?

1 vote

When is a circle not a circle?

1 vote

What is meant when it is said that the universe is homogeneous and isotropic?

1 vote

When is it admissible to neglect the pressure term to use the Burgers' equation instead of the Navier-Stokes equation?

1 vote

What's the explanation of 'paper pieces and comb experiment' about static electricity on atomic level?

1 vote

How do we get the image of a black hole?

1 vote

Shape of isotherms in $P$-$V$ phase diagram

1 vote

How to understand the process of the kinetic energy formula?