User KlausK

7 votes

1 answer

1k views

Is entropy defined up to a constant?

asked Oct 11 at 5:51

5 votes

3 answers

669 views

Is entropy in the third law of thermodynamics a continuous quantity?

asked Feb 1 at 13:03

3 votes

0 answers

59 views

Can there be bound states of two $Z$ bosons or of a $W^+$ and a $W^-$ boson? [duplicate]

asked Jan 5 at 19:40

3 votes

1 answer

147 views

What is the power emitted by a black hole for an observer located near its horizon?

asked Nov 6, 2022 at 11:18

3 votes

3 answers

465 views

Is there an experiment showing that general relativity and the standard model contradict each other?

asked Nov 17, 2022 at 17:57

2 votes

2 answers

187 views

Has MOND been tested or even confirmed for our own galaxy, the Milky Way?

asked Nov 12, 2022 at 7:47

2 votes

1 answer

149 views

Why is zero entropy possible for a solid at absolute zero temperature?

asked Jan 26 at 10:32

2 votes

1 answer

233 views

Has the entropy of a single photon ever been measured?

asked Feb 9 at 6:02

2 votes

1 answer

146 views

If a flagpole visualizes a Pauli spinor, what visualizes a Dirac spinor?

asked Jun 28 at 21:28

1 vote

1 answer

195 views

Dirac explained spin 1/2 with ribbons and ropes - is there another way? (With answer by Roger Penrose himself - probably)

asked Oct 17 at 20:20

1 vote

1 answer

209 views

Why is the mutiplication table for generators in the $su(3)$ algebra so bizarre?

asked Apr 5 at 20:46

1 vote

1 answer

72 views

Is the value $k \ln 2$ the largest or the smallest entropy that a single particle can carry? [closed]

asked Feb 4 at 7:35

1 vote

0 answers

174 views

Force between two skew (non-parallel) straight current carrying wires [closed]

asked Jan 22 at 7:57

1 vote

1 answer

72 views

Is action an extensive quantity - always?

asked Jan 16 at 12:38

1 vote

2 answers

141 views

How can one visualize a real, symmetric $3 \times 3$ tensor with zero trace?

asked Nov 16, 2022 at 6:08

1 vote

1 answer

106 views

Is the running of electric charge the same as the running of the fine structure constant?

asked Dec 1, 2022 at 20:52

1 vote

1 answer

192 views

Why is there no law of physics that contains the Planck volume?

asked Dec 10, 2022 at 12:11

0 votes

1 answer

67 views

Could there be a hybrid particle made of one quark and one or several gluons?

asked Nov 24, 2022 at 13:58

0 votes

2 answers

137 views

Does the Planck limit on the probability density of wave functions have any measurable effect?

asked Jun 9, 2022 at 15:40

0 votes

1 answer

116 views

Which effect in everyday life is due to the Boltzmann constant? [closed]

asked Aug 4, 2022 at 19:53

0 votes

1 answer

186 views

What is the smallest entropy value ever measured?

asked Jan 18 at 5:33

0 votes

2 answers

94 views

What is the correct intuitive definition of a Pauli spinor?

asked Jun 26 at 6:54

0 votes

0 answers

81 views

Is the rotational speed of stars at the outside of galaxies larger than their Newtonian escape velocity?

asked Oct 24 at 12:00

0 votes

1 answer

98 views

Why is black hole mass proportional to the radius, whereas their entropy is proportional to their surface?

asked Aug 6 at 9:55

0 votes

0 answers

30 views

Does the electric charge run differently with energy for electrons and for W bosons?

asked Sep 17 at 8:40

-1 votes

1 answer

161 views

Is there a clean mathematical way to deduce grand unification from string theory?

asked Oct 29 at 7:47

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26 Questions

Is entropy defined up to a constant?

Is entropy in the third law of thermodynamics a continuous quantity?

Can there be bound states of two $Z$ bosons or of a $W^+$ and a $W^-$ boson? [duplicate]

What is the power emitted by a black hole for an observer located near its horizon?

Is there an experiment showing that general relativity and the standard model contradict each other?

Has MOND been tested or even confirmed for our own galaxy, the Milky Way?

Why is zero entropy possible for a solid at absolute zero temperature?

Has the entropy of a single photon ever been measured?

If a flagpole visualizes a Pauli spinor, what visualizes a Dirac spinor?

Dirac explained spin 1/2 with ribbons and ropes - is there another way? (With answer by Roger Penrose himself - probably)

Why is the mutiplication table for generators in the $su(3)$ algebra so bizarre?

Is the value $k \ln 2$ the largest or the smallest entropy that a single particle can carry? [closed]

Force between two skew (non-parallel) straight current carrying wires [closed]

Is action an extensive quantity - always?

How can one visualize a real, symmetric $3 \times 3$ tensor with zero trace?

Is the running of electric charge the same as the running of the fine structure constant?

Why is there no law of physics that contains the Planck volume?

Could there be a hybrid particle made of one quark and one or several gluons?

Does the Planck limit on the probability density of wave functions have any measurable effect?

Which effect in everyday life is due to the Boltzmann constant? [closed]

What is the smallest entropy value ever measured?

What is the correct intuitive definition of a Pauli spinor?

Is the rotational speed of stars at the outside of galaxies larger than their Newtonian escape velocity?

Why is black hole mass proportional to the radius, whereas their entropy is proportional to their surface?

Does the electric charge run differently with energy for electrons and for W bosons?

Is there a clean mathematical way to deduce grand unification from string theory?