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Andrew Steane
  • Member for 3 years, 10 months
  • Last seen this week
  • Oxford, UK
18 votes
2 answers
1k views

Could Hawking radiation have a lot of neutrinos and dark matter?

17 votes
7 answers
3k views

Is there any "Cosmological Principle"?

16 votes
4 answers
861 views

Is the term "quantum fluctuation" an aide to understanding? [closed]

15 votes
4 answers
1k views

Is it true that the interior of an atom is mostly vacuum or empty space?

12 votes
1 answer
240 views

How many times do solar protons repeatedly fuse and fission before they form deuteron

12 votes
6 answers
2k views

What is the cause and what is the effect in the Bernoulli effect?

11 votes
3 answers
136 views

What is the right insight or intuition regarding difference (if any) between a resonance and a bound but unstable state?

11 votes
7 answers
506 views

Is there a pressure gradient in a stationary gas with a temperature gradient?

11 votes
1 answer
230 views

Are clouds heavier than air?

8 votes
3 answers
309 views

Is cosmic inflation slow rather than fast?

8 votes
2 answers
197 views

Can one body push another body away by sending gravitational waves towards it?

8 votes
1 answer
140 views

Unruh effect for finite period of low acceleration

6 votes
3 answers
526 views

Is torsion a property of a manifold or of a connection?

6 votes
1 answer
337 views

Particles, fluctuations and the quantum vacuum: is this right?

6 votes
5 answers
373 views

Can the "Boltzmann brain" concept inform discussions of cosmology?

4 votes
2 answers
113 views

By how much are various dibaryon states unbound?

4 votes
1 answer
168 views

What happens when an electron, or a neutron, approaches a brick wall?

4 votes
0 answers
46 views

Why is thermal conductivity of a gas higher than one would think from diffusion coefficient

3 votes
0 answers
43 views

Which average are we taking in a rigorous calculation of the mean free path in a gas?

3 votes
0 answers
105 views

Are deductions from CMB much less accurate than claimed, owing to approximations in the FLRW model?

2 votes
0 answers
62 views

Does the Sachs-Wolfe effect depart from $1/3$ for large $k$?

2 votes
0 answers
43 views

How smooth does reheating (after inflation) need to be?

2 votes
0 answers
47 views

Does an electron undergo a form of Brownian motion in the vacuum?

1 vote
1 answer
45 views

How to remember which way the magnetic field goes?

1 vote
1 answer
78 views

Understanding mean rate of change in Brownian motion

1 vote
0 answers
37 views

What do you see as you look outwards while falling into a Kerr black hole?

1 vote
0 answers
123 views

How to relate CMB acoustic peak to BAO in galaxy surveys to better than a factor 2?

1 vote
1 answer
95 views

Why can't primordial fluctuations be super-"horizon" without inflation?

0 votes
1 answer
148 views

Correlation of position and velocity in Brownian motion