User Ruslan

68

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8

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28k

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How is quantum superposition different from mixed state?

Feb 10 '19 at 14:41 irritable_phd_syndrom 316

1

vote

2

answers

15k

views

How to calculate temperature of an incandescent bulb filament?

thermodynamics electricity temperature

Mar 8 '17 at 5:09 hammo 1

1

0

votes

2

answers

5k

views

Why is glow visible around bright light sources in darkness?

visible-light vision

Sep 15 '16 at 8:01 tfb 20.1k

1

2

votes

1

answer

4k

views

Vector and scalar potentials of plane wave

electromagnetic-radiation potential

Nov 8 '18 at 23:08 Rob Jeffries 82.2k

2

votes

2

answers

3k

views

Derivation of relativistic uniformly accelerated motion

homework-and-exercises special-relativity acceleration

Mar 4 '14 at 0:05 sciencemonk 31

1

3

votes

1

answer

2k

views

Can this simple spectrometer be precise without collimation?

optics spectroscopy diffraction

Sep 23 '14 at 13:25 Chris Mueller 6,099

5

9

votes

3

answers

2k

views

Visualizing GR spacetime distortion in 1+1D spacetime instead of 2D space

general-relativity spacetime visualization

Aug 22 at 8:10 Glorfindel 822

2

1

vote

1

answer

2k

views

Why is Heisenberg picture used if Schrödinger picture is simpler?

quantum-mechanics

May 7 '14 at 15:44 alanf 4,782

1

4

votes

3

answers

2k

views

Is there any time-dependent hydrogen atom Schrödinger equation, solvable analytically?

quantum-mechanics schroedinger-equation hydrogen

Nov 4 '17 at 20:46 Emilio Pisanty 103k

5

1

vote

1

answer

2k

views

Total vs partial time derivative of action

lagrangian-formalism action differentiation

Nov 3 '14 at 16:00 Chanto 170

13

17

votes

1

answer

2k

views

Interpretation of Dirac equation states

wavefunction dirac-equation

Dec 4 '14 at 12:27 Piotr Migdal 5,943

1

2

votes

1

answer

1k

views

Where to find detailed measured emission spectra of all chemical elements?

resource-recommendations spectroscopy chemical-compounds

Dec 4 '15 at 19:22 Emilio Pisanty 103k

4

5

votes

4

answers

1k

views

Why can interference from two independent sources be observed?

quantum-mechanics interference

Mar 18 '14 at 19:34 Community♦ 1

9

votes

1

answer

1k

views

Are pure mechanical evanescent waves possible?

waves acoustics

Dec 26 '13 at 2:58 Community♦ 1

3

2

votes

2

answers

1k

views

How to connect Rabi frequency with absorption intensity?

quantum-mechanics quantum-optics absorption

Dec 13 '14 at 23:31 sa101 327

3

8

votes

1

answer

938

views

Can a quasiclassical electron wave packet in elliptic orbit be formed from bound hydrogen-like eigenstates?

quantum-mechanics wavefunction hydrogen

Mar 2 '19 at 12:00 Ruslan 14.6k

9

12

votes

3

answers

881

views

Can spin-1/2 emerge as a property of quasiparticles if original description of the system was without spin?

quantum-mechanics quantum-spin topological-order quasiparticles

Aug 12 '18 at 12:10 Xiao-Gang Wen 10.2k

2

5

votes

1

answer

845

views

Why are doubly-excited states in helium not square integrable?

quantum-mechanics atomic-physics

Feb 22 '17 at 13:06 Community♦ 1

1

2

votes

4

answers

838

views

Does the angular momentum vector operator $\hat{\vec{J}}$ have no eigenstates?

quantum-mechanics angular-momentum operators

Nov 12 '14 at 19:22 Qmechanic♦ 123k

4

votes

1

answer

812

views

Does action really have to be Lorentz-invariant in SR?

special-relativity symmetry inertial-frames action

Jan 30 '14 at 22:58 Community♦ 1

2

8

votes

5

answers

769

views

What does electric field of unpolarized light look like when measured?

electromagnetic-radiation polarization

Nov 4 '18 at 16:08 Ruslan 14.6k

2

3

votes

0

answers

736

views

What is the symmetry group of this Hamiltonian?

quantum-mechanics symmetry

Feb 4 '15 at 15:51 Ruslan 14.6k

6

votes

2

answers

726

views

Inexact measurement and wavefunction collapse

quantum-mechanics wavefunction wavefunction-collapse observables

Jan 4 '14 at 11:57 Nanite 2,917

6

10

votes

1

answer

715

views

How will SR EM Lagrangian change if we find a magnetic charge?

electromagnetism lagrangian-formalism gauge-theory magnetic-monopoles

Jul 22 '17 at 8:36 Phoenix87 8,103

11

10

votes

3

answers

694

views

Renormalization in non-relativistic quantum mechanics

quantum-mechanics renormalization

Oct 13 '16 at 10:53 Community♦ 1

1

vote

1

answer

671

views

Three body force

three-body-problem

Dec 31 '13 at 17:41 Community♦ 1

1

3

votes

2

answers

634

views

Is mean kinetic energy related to temperature of a system of interacting classical particles?

thermodynamics classical-mechanics temperature ideal-gas kinetic-theory

Dec 31 '16 at 16:53 Ken G 2,982

2

4

votes

2

answers

627

views

How can Lorentz contraction be “directly” measured?

special-relativity measurements length-contraction

Jan 31 '18 at 22:12 Mr Wool 1

1

5

votes

2

answers

620

views

Why are S-state solutions of Dirac equation for hydrogen atom allowed to be unbounded?

quantum-mechanics wavefunction dirac-equation singularities hydrogen

Nov 19 '16 at 19:53 Community♦ 1

3

votes

1

answer

607

views

Finding frame of reference where angular momentum appears zero

reference-frames rotation

Aug 5 '13 at 19:22 Ruslan 14.6k

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109 Questions

How is quantum superposition different from mixed state?

How to calculate temperature of an incandescent bulb filament?

Why is glow visible around bright light sources in darkness?

Vector and scalar potentials of plane wave

Derivation of relativistic uniformly accelerated motion

Can this simple spectrometer be precise without collimation?

Visualizing GR spacetime distortion in 1+1D spacetime instead of 2D space

Why is Heisenberg picture used if Schrödinger picture is simpler?

Is there any time-dependent hydrogen atom Schrödinger equation, solvable analytically?

Total vs partial time derivative of action

Interpretation of Dirac equation states

Where to find detailed measured emission spectra of all chemical elements?

Why can interference from two independent sources be observed?

Are pure mechanical evanescent waves possible?

How to connect Rabi frequency with absorption intensity?

Can a quasiclassical electron wave packet in elliptic orbit be formed from bound hydrogen-like eigenstates?

Can spin-1/2 emerge as a property of quasiparticles if original description of the system was without spin?

Why are doubly-excited states in helium not square integrable?

Does the angular momentum vector operator $\hat{\vec{J}}$ have no eigenstates?

Does action really have to be Lorentz-invariant in SR?

What does electric field of unpolarized light look like when measured?

What is the symmetry group of this Hamiltonian?

Inexact measurement and wavefunction collapse

How will SR EM Lagrangian change if we find a magnetic charge?

Renormalization in non-relativistic quantum mechanics

Three body force

Is mean kinetic energy related to temperature of a system of interacting classical particles?

How can Lorentz contraction be “directly” measured?

Why are S-state solutions of Dirac equation for hydrogen atom allowed to be unbounded?

Finding frame of reference where angular momentum appears zero