Skip to main content
Physics
John Hobson's user avatar
John Hobson's user avatar
John Hobson's user avatar
John Hobson
  • Member for 10 years, 3 months
  • Last seen more than a month ago
Profile Activity
Stats
371
reputation
4k
reached
7
answers
16
questions
Communities
Badges
This user doesn’t have any gold badges yet.
1
silver badge
7
bronze badges
Top tags
View all tags
3
Score
11
Posts
48
Posts %
3
Score
3
Posts
13
Posts %
2
Score
14
Posts
61
Posts %
2
Score
4
Posts
17
Posts %
0
Score
5
Posts
22
Posts %
0
Score
5
Posts
22
Posts %
Top posts
View all questions and answers
8
Is there cosmological redshift within the Milky Way?
Jul 23, 2021
3
Why is the Universe spatially flat even though the various energy densities are nonzero?
Oct 31, 2018
2
Can we have positively curved space within negatively curved spacetime?
Apr 10, 2021
2
How do you relate $\Omega_{k}$, the curvature term in the FLRW metric, to the radius of curvature?
Jul 17, 2023
2
What is the radius of a black hole? [duplicate]
Jul 30, 2023
1
Why does $n = -3(1+ \omega)$? [closed]
Dec 16, 2022
1
Is there gravitational time dilation as we look further out into space (and therefore further back in time)?
Jan 22, 2023
1
Is there a Doppler effect on the surface of an expanding balloon?
Nov 18, 2023
1
Why are physicists not more concerned that there are too many explanations for redshift in the universe?
Mar 26
0
How would red (frequency) shift work for sound waves on the surface of a balloon?
Sep 9, 2023