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Gabu
  • Member for 7 years, 4 months
  • Last seen more than 6 years ago
8 votes
2 answers
2k views

The relation between boundary conditions and the density of states of a system

3 votes
1 answer
436 views

How one arrives at the Lüder's Rule?

3 votes
1 answer
2k views

How to decompose a density matrix of a mixed ensemble into a sum of pure ensembles [closed]

2 votes
1 answer
319 views

Are there symbols for optical systems like there are for electric circuits?

2 votes
1 answer
2k views

How to calculate the particle number fluctuation in the Grand Canonical Ensemble

2 votes
0 answers
713 views

What is the entropy of a classical rigid rotor?

2 votes
0 answers
831 views

Proof that the heat capacity of a system at constant volume is greater than zero at the equilibrium

2 votes
2 answers
2k views

How to obtain the Bose-Einstein distribution from the canonical ensemble?

1 vote
0 answers
276 views

How to relate the wavenumber to the momentum and the energy of a electromagnetic wave?

1 vote
1 answer
122 views

What happens to the wavenumbers of a EM plane wave when it crosses an interface between two dielectric media?

1 vote
2 answers
259 views

What is an ensemble in the classical statistics context?

0 votes
1 answer
949 views

What happens to a system of three free fermions when you turn on a two states potential?

0 votes
1 answer
262 views

How fermions arrange themseves when there are more allowed states than particles in the system?

0 votes
2 answers
899 views

What happens if a helicopter's propeller spins in reverse?

0 votes
1 answer
455 views

Why does the Doppler effect have different expressions for a moving source and a moving observer if movement is relative?