Network profile

Richard

Reputation

1,176

1.2k
620
65

2018
2019
2020
2021

Top tag

general-relativity

Next privilege

2,000 Rep.

Edit questions and answers

Badges

4

19

Newest

Yearling

Next badge

238/300

Impact

2 posts edited

2 helpful flags

241 votes cast

10 Bookmarks

Votes Activity Newest Views Added

93

votes

7

answers

31k

views

What is the speed of sound in space?

thermodynamics astrophysics acoustics plasma-physics interstellar-matter

Oct 12 at 13:30 Peter Erwin 938

12

votes

2

answers

940

views

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

geometry

5h ago Richard 1,176

9

votes

11

answers

647

views

Is it more work to put more (apparent) effort to get the same outcome?

classical-mechanics energy work everyday-life biophysics

May 4 at 16:49 Jon Custer 5,936

8

votes

1

answer

566

views

What are the properties of a sonic shock wave?

fluid-dynamics acoustics atmospheric-science shock-waves

Aug 1 '17 at 14:21 honeste_vivere 10.8k

4

votes

2

answers

226

views

Finding the dimensions of a spacetime given the Riemann tensor

homework-and-exercises general-relativity differential-geometry curvature spacetime-dimensions

Jul 26 '19 at 7:36 Richard 1,176

4

votes

1

answer

436

views

Why does my binary star simulation only work for equal masses and initial speeds?

newtonian-gravity orbital-motion computational-physics simulations software

Apr 20 at 13:10 Charles Francis 10.6k

3

votes

1

answer

108

views

How can one define a covariant rate of change of rest mass for an extended body?

general-relativity special-relativity classical-mechanics mass mass-energy

Nov 5 '19 at 7:45 Richard 1,176

2

votes

2

answers

103

views

Specific heat ratio in shockwaves

homework-and-exercises fluid-dynamics acoustics shock-waves

Jan 4 '20 at 20:33 honeste_vivere 10.8k

2

votes

1

answer

82

views

Relativistic hydrodynamics [closed]

homework-and-exercises general-relativity fluid-dynamics metric-tensor

Nov 6 at 6:34 John Rennie 308k

1

vote

1

answer

494

views

What is the difference between invariance and covariance? [duplicate]

tensor-calculus relativity definition covariance invariants

Nov 9 '19 at 11:47 Qmechanic♦ 141k

Physics Stack Exchange works best with JavaScript enabled