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Arturo don Juan
  • Member for 7 years, 7 months
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12 votes
1 answer
1k views

Why must inertial mass and gravitational mass be equal, not just proportional?

9 votes
4 answers
1k views

Maxwell Equations don't give unique Electric Field?

9 votes
2 answers
1k views

Why are symmetry transformations connected to the identity necessarily represented by linear unitary operators?

9 votes
1 answer
234 views

Questions about the large-instanton problem

9 votes
2 answers
460 views

Feynman diagrams, can't Wick-rotate due to poles in first and third $p_0$ quadrants?

8 votes
1 answer
362 views

How can phonons possibly be assigned precise locations?

8 votes
3 answers
5k views

Einstein's first postulate implies the second?

7 votes
1 answer
611 views

How do scientists measure the spin-parity of a resonance?

7 votes
2 answers
11k views

Killing Vectors in Schwarzschild Metric

7 votes
2 answers
219 views

Does the path of a Wilson line in a quark-correlator matter?

6 votes
2 answers
2k views

How is the Poisson bracket $\{\mathbf{c},\mathbf{l}\cdot\hat{n}\}=(\hat{n}\times \mathbf{c})$, for constant $\mathbf{c}$, and not zero?

6 votes
1 answer
2k views

Lower bound on energy is potential minimum

6 votes
2 answers
1k views

What is the purpose of the Maxwell Stress Tensor?

6 votes
1 answer
7k views

Divergence of Cauchy Stress Tensor [closed]

5 votes
1 answer
3k views

How do scientists estimate elemental-abundance in the universe?

5 votes
3 answers
47k views

What is a good definition of 'time'? [duplicate]

5 votes
1 answer
2k views

What does 'channel' mean?

5 votes
2 answers
1k views

Stress Force - Understanding Cauchy Stress Tensor

5 votes
1 answer
231 views

What is a "stochastic web"?

5 votes
1 answer
1k views

I tested the RLC circuit natural frequency formula, and I'm getting the exact opposite result. Why?

5 votes
0 answers
194 views

Is there an equation of state for a non-ideal Fermi gas?

4 votes
3 answers
519 views

Is the wavefunction unique to the observer?

4 votes
1 answer
6k views

Trace of density matrix for mixed state

4 votes
3 answers
2k views

How do you physically measure voltage and current?

4 votes
1 answer
134 views

When was the phrase "beta function" of renormalization first used?

4 votes
1 answer
677 views

How do we know -273.15 centigrade is 0 kelvin?

4 votes
0 answers
185 views

Importance of energy relation in Landau & Lifschitz "Statistical Physics"?

4 votes
3 answers
3k views

Why don't E&M fields change orientation after hitting a surface?

4 votes
0 answers
98 views

Gaussian Minimizes Uncertainty - Statement Qualification [duplicate]

4 votes
1 answer
256 views

Are there fifth-kind and sixth-kind generating functions?

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