User Rumplestillskin

9 votes

Deriving Conservation of Angular Momentum from Newton's Laws

answered Jul 6, 2017 at 11:04

7 votes

Relationship between Coordinate Time and Proper Time

answered Jan 13, 2017 at 1:25

6 votes

Accepted

What advantages have a symplectic or geometric integrator over a simple one, say, RK4?

answered May 18, 2017 at 23:59

4 votes

Lagrange Multipliers for Simple Pendulum

answered Mar 14, 2017 at 8:26

3 votes

Accepted

Help in an integration step in QFT by Lewis H. Ryder

answered Jun 21, 2017 at 2:07

3 votes

Angular velocity of a wheel

answered Jan 30, 2017 at 5:25

3 votes

Gravity acceleration - why is it inverse time squared?

answered Jul 4, 2017 at 22:57

3 votes

Accepted

How to find 4-velocity components in a perturbed metric?

answered Jul 9, 2018 at 3:39

2 votes

Accepted

Where does the negative sign of the Laplacian in the four-divergence go?

answered Jul 15, 2018 at 11:58

2 votes

Gravitational waves of an oscillating Schwarzschild black hole

answered Jul 21, 2018 at 9:25

2 votes

Variation of the Christoffel symbols with respect to $g^{\mu\nu}$

answered Jul 7, 2017 at 0:01

2 votes

Accepted

$c_p - c_v $ proof

answered Oct 23, 2017 at 21:26

2 votes

Accepted

Difference between these two tensors? (help with index notation)

answered Mar 7, 2017 at 7:42

2 votes

Accepted

How to identify cosntants of motion/ which constants of motion are independent of mass?

answered Jan 19, 2017 at 11:41

2 votes

Constants of motion from a Lagrangian

answered Dec 30, 2016 at 23:26

1 vote

What's the equation for a radial null geodesic?

answered Jan 13, 2017 at 11:29

1 vote

Why do larger black holes emit less Hawking Radiation than smaller black holes?

answered Mar 14, 2017 at 8:05

1 vote

Accepted

Minimum number of vectors needed in different planes for their resultant to be zero

answered Jun 22, 2017 at 9:49

1 vote

What is actually Gravitational potential?

answered Jun 14, 2018 at 23:42

1 vote

Null geodesic eqaution / Timelike geodesic equation

answered Jun 28, 2018 at 4:38

1 vote

Accepted

Variation of action with Killing vectors

answered Oct 23, 2017 at 10:54

1 vote

Feynman lectures

answered Feb 19, 2017 at 8:41

0 votes

What is the use of vectors for forces?

answered Jun 14, 2018 at 8:34

0 votes

Mass Addition in Special Relativity

answered Mar 14, 2017 at 11:56

0 votes

Accepted

How to show angle between velocity and acceleration vector is constant in polar co-ordinates?

answered May 18, 2017 at 7:32

0 votes

Accepted

Derivative with tensor indices

answered Jan 30, 2017 at 12:35

0 votes

What does the $j$ mean in this notation?

answered Jan 25, 2017 at 7:30

0 votes

The 'right' way to express the line element $ds^2$

answered Jan 26, 2017 at 0:02

0 votes

Very simple index notation question

answered Jan 7, 2017 at 13:45

0 votes

Regarding Energy and Momentum in QM

answered Dec 13, 2016 at 1:59

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31 Answers

Deriving Conservation of Angular Momentum from Newton's Laws

Relationship between Coordinate Time and Proper Time

What advantages have a symplectic or geometric integrator over a simple one, say, RK4?

Lagrange Multipliers for Simple Pendulum

Help in an integration step in QFT by Lewis H. Ryder

Angular velocity of a wheel

Gravity acceleration - why is it inverse time squared?

How to find 4-velocity components in a perturbed metric?

Where does the negative sign of the Laplacian in the four-divergence go?

Gravitational waves of an oscillating Schwarzschild black hole

Variation of the Christoffel symbols with respect to $g^{\mu\nu}$

$c_p - c_v $ proof

Difference between these two tensors? (help with index notation)

How to identify cosntants of motion/ which constants of motion are independent of mass?

Constants of motion from a Lagrangian

What's the equation for a radial null geodesic?

Why do larger black holes emit less Hawking Radiation than smaller black holes?

Minimum number of vectors needed in different planes for their resultant to be zero

What is actually Gravitational potential?

Null geodesic eqaution / Timelike geodesic equation

Variation of action with Killing vectors

Feynman lectures

What is the use of vectors for forces?

Mass Addition in Special Relativity

How to show angle between velocity and acceleration vector is constant in polar co-ordinates?

Derivative with tensor indices

What does the $j$ mean in this notation?

The 'right' way to express the line element $ds^2$

Very simple index notation question

Regarding Energy and Momentum in QM