Steven Thomas Hatton's user avatar
Steven Thomas Hatton's user avatar
Steven Thomas Hatton's user avatar
Steven Thomas Hatton
  • Member for 6 years, 4 months
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  • Center of the observable Universe.
19 votes
5 answers
2k views

Without saying "cross product" explain why there is a skew-symmetric angular momentum tensor

9 votes
1 answer
513 views

Is 4-momentum a vector or a 1-form?

6 votes
2 answers
548 views

Is there a useful way to visualize the symmetries of the relativistic Riemann curvature tensor?

4 votes
3 answers
803 views

Is there a physically meaningful example of a spacetime scalar potential?

3 votes
4 answers
294 views

Why is there a $1/2$ in the definition of energy per degree of freedom $E=(1/2)kT$?

3 votes
2 answers
240 views

Is MTW's covariant commutator $\left[\nabla_{a},\nabla_{b}\right]$ really the same thing as their vector field commutator $\left[a,b\right]$?

3 votes
1 answer
397 views

When can we raise lower indices on "nontensors" as described in Dirac's book *General Theory of Relativity*?

3 votes
0 answers
66 views

How to interpret Einstein's development of Euclidean orthogonal transformations in The Meaning of Relativity?

3 votes
2 answers
379 views

How and why is $\partial x^{i}/\partial\dot{q}^{j}=0$ in generalized coordinates

3 votes
1 answer
448 views

Understanding Feynman's development of the ideal gas law: Vol I 39-2 of The Feynman Lectures on Physics

3 votes
1 answer
379 views

Feynman's Lost Lecture: what is the significance of $\frac{d\mathfrak{v}}{d\theta}=-\frac{GMm}{\left|\mathfrak{L}\right|}\hat{\mathfrak{r}}?$

3 votes
2 answers
189 views

Has the definition of "statistical mechanics" changed from its original meaning?

3 votes
2 answers
2k views

Feynman's calculation of surface charge density in a dielectric: is the surface polarization charge a true an electric charge?

2 votes
2 answers
167 views

Susskind & Hrabovsky: For any system $F_i=-\partial_{i}V$?

2 votes
3 answers
1k views

Are contravariant basis vectors and basis 1-forms identical?

2 votes
0 answers
265 views

Feynman Lectures I 40: Is the homogeneity of the Maxwell-Boltzmann distribution a result of, or a pre-requisite for its derivation?

2 votes
1 answer
118 views

Demonstrating the average dot-product of relative incident velocity with CM velocity of colliding pairs of ideal gas atoms is zero

2 votes
2 answers
422 views

Lagrange Multipliers and Virtual Work: Are Joos & Freeman wrong?

2 votes
0 answers
359 views

Is there an elegant way to integrate Lagrange's equations for an inverse-square central force? [closed]

2 votes
1 answer
175 views

Is Feynman correct about this inverse square relationship in Vol I-28?

2 votes
0 answers
96 views

How to think about the transverse force imparted to an electron by an EM wave?

2 votes
2 answers
1k views

Defining generalized momentum in terms of kinetic energy versus a Lagrangian

2 votes
1 answer
323 views

How to get the Riemann curvature tensor from the commutator operating on a basis vector

2 votes
2 answers
347 views

Is the defintion of *inertial reference frame* given by Blandford and Thorne acceptable?

2 votes
2 answers
104 views

Is the EMP threat to the power grid supported by physics? [closed]

2 votes
2 answers
153 views

MTW's Gravitation, Box 11.2, etc.: Relative acceleration depends only on $\mathbf{u}$ and $\mathbf{n}$ at the fiducial point?

2 votes
1 answer
260 views

MTW the contraction of a basis bi-vector with a basis two-form. Why am I getting this factor of 2?

2 votes
3 answers
155 views

First part of MTW Exercise 10.1: additivity of the commutator. Is there a vector symbolic proof that doesn't use components?

2 votes
2 answers
86 views

How does the shear and bending moment diagram relate to the stress tensor field?

2 votes
1 answer
79 views

Is there a generally followed "convention" regarding the signs of the diagonal components of the stress tensor?