user avatar
user avatar
user avatar
Kao Ethan
  • Member for 7 years, 3 months
  • Last seen more than a month ago
198 votes
9 answers
255k views

If photons have no mass, how can they have momentum?

  • 2,636
179 votes
15 answers
49k views

What's the point of Hamiltonian mechanics?

  • 26k
84 votes
4 answers
26k views

Physical meaning of Legendre transformation

  • 1,107
23 votes
5 answers
55k views

Why can the entropy of an isolated system increase?

14 votes
4 answers
24k views

Rotation of a slipping ladder

  • 1,643
14 votes
5 answers
2k views

Intuitively, why is a reversible process one in which the system is always at equilibrium?

7 votes
3 answers
3k views

Ground state of a quantum mechanical system

  • 3,012
6 votes
2 answers
3k views

Hamiltonian from a Lagrangian with constraints?

5 votes
2 answers
6k views

Pressure experienced due to magnetic force?

  • 3,973
4 votes
1 answer
884 views

Reversible cycle approximated by Carnot cycles

1 vote
1 answer
1k views

Physical Meaning Of $ dQ/T $ Regarding Clausius Inequality: Is it related to Energy Loss in form of heat or Something Else?

  • 143
1 vote
2 answers
1k views

Inequality of Clausius

  • 273