User grjj3

10 votes

2 answers

2k views

Flat bands and localization in real space

asked May 28, 2021 at 8:07

10 votes

1 answer

3k views

Tight-binding vs. nearly free electron (NFE) model predictions

asked Mar 22, 2021 at 10:40

6 votes

1 answer

2k views

Chain of balls on an inclined plane

asked May 12, 2013 at 19:20

6 votes

4 answers

7k views

Potential energy sign conventions

asked May 15, 2013 at 12:26

5 votes

1 answer

308 views

Tension of rope in the gravitational field of earth

asked Apr 30, 2013 at 19:56

5 votes

2 answers

902 views

Relation between critical temperature and density of states

asked May 26, 2021 at 11:55

5 votes

1 answer

119 views

Zener breakdown - a quantum mechanical derivation

asked Dec 24, 2022 at 12:41

4 votes

1 answer

339 views

Firing machine question

asked Apr 25, 2013 at 21:04

4 votes

1 answer

2k views

Conservation of momentum in collision of two bodies

asked May 1, 2013 at 22:43

4 votes

1 answer

2k views

Representing a rotation around an arbitrary axis using Wigner $D$-matrix

asked Oct 6, 2020 at 12:31

4 votes

2 answers

2k views

Gauss' law and an external charge

asked May 7, 2013 at 20:18

4 votes

2 answers

342 views

Landau's derivation of polarization

asked Feb 19, 2021 at 9:12

3 votes

1 answer

1k views

Propagator of harmonic oscillator at specific times

asked Nov 9, 2021 at 16:12

2 votes

0 answers

76 views

Distance $E_F-E_i$ in a compensated semiconductor

asked Jul 18, 2019 at 17:53

2 votes

1 answer

904 views

Decomposition of a Cartesian tensor

asked Dec 16, 2019 at 17:23

2 votes

2 answers

558 views

Escape velocity to intersection of two gravitational fields

asked May 2, 2013 at 18:18

2 votes

1 answer

4k views

Gravitational potential energy of mass between two planets

asked May 1, 2013 at 15:11

1 vote

0 answers

89 views

Cancellation of dots question [duplicate]

asked Oct 28, 2017 at 19:31

1 vote

1 answer

579 views

How the matrix representation of a Hamiltonian affects the eigenvalues?

asked Sep 17, 2020 at 17:58

1 vote

2 answers

734 views

Rotation which diagonalizes the Hamiltonian

asked Sep 30, 2020 at 21:19

1 vote

0 answers

82 views

Fourier decomposition range in field quantization procedure

asked Dec 4, 2021 at 20:42

1 vote

2 answers

1k views

Flow on an inclined plane and Bernoulli's principle

asked Feb 11, 2022 at 21:09

0 votes

1 answer

1k views

Change in speed of a satellite

asked Apr 28, 2013 at 17:56

-1 votes

1 answer

139 views

Radiating quadrupole [closed]

asked Jan 16, 2021 at 13:58

Stack Exchange Network

24 Questions

Flat bands and localization in real space

Tight-binding vs. nearly free electron (NFE) model predictions

Chain of balls on an inclined plane

Potential energy sign conventions

Tension of rope in the gravitational field of earth

Relation between critical temperature and density of states

Zener breakdown - a quantum mechanical derivation

Firing machine question

Conservation of momentum in collision of two bodies

Representing a rotation around an arbitrary axis using Wigner $D$-matrix

Gauss' law and an external charge

Landau's derivation of polarization

Propagator of harmonic oscillator at specific times

Distance $E_F-E_i$ in a compensated semiconductor

Decomposition of a Cartesian tensor

Escape velocity to intersection of two gravitational fields

Gravitational potential energy of mass between two planets

Cancellation of dots question [duplicate]

How the matrix representation of a Hamiltonian affects the eigenvalues?

Rotation which diagonalizes the Hamiltonian

Fourier decomposition range in field quantization procedure

Flow on an inclined plane and Bernoulli's principle

Change in speed of a satellite

Radiating quadrupole [closed]