musgravepeter

5 ms·

1.
by musgravepeter 2mo ago
Perhaps start with https://arxiv.org/abs/2605.21660 "It is certainly true that there are aspects of relativity that are counterintuitive, not only to retired engineers but also to many physicists."
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by musgravepeter 2y ago
https://www.smbc-comics.com/comic/grind
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by musgravepeter 2y ago
https://royalsocietypublishing.org/doi/epdf/10.1098/rsnr.202...
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by musgravepeter 3y ago
Both these books are on my book shelf and are very good. Bate et. al. especially since it is a Dover book and very affordable. The book that is always on my DESK is "Fundamentals of Astrodynamics and Applications" by Vallado. Ther
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by musgravepeter 3y ago
Take a look at https://store.steampowered.com/app/882140/Reentry__An_Orbita...
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by musgravepeter 4y ago
The article mentions "few known exact solutions". There are actually quite a number. Most are from after 1950. Cambridge University Press has two good books: Exact Spacetimes in Einstein's General Relativity (Griffith & P
7.
General-relativistic thin-shell Dyson mega-spheres(arxiv.org)
2 points by musgravepeter 4y ago|0 comments
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by musgravepeter 5y ago
L4 and L5 are stable when the smaller mass is less than about 0.0385 times the larger mass [1]. This means e.g. a typical binary star system would not have stable L4/L5 points. The reference [1] works through this in careful detail and
9.
by musgravepeter 5y ago
+1 for Artin's Algebra. I think is very under appreciated.
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by musgravepeter 5y ago
I've been on a Math journey since I retired a couple of years ago and I agree with all the books mentioned that I know and look forward to picking up some of the one I do not know. I agree baby Rudin is essential, but I find it tough g
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So you want to study mathematics(susanrigetti.com)
604 points by musgravepeter 5y ago|359 comments
12.
by musgravepeter 5y ago
There is Geometric Algebra for Physicists by Doran and Lasenby (2003). It recasts mechanics, E&M up to gauge theories and GR into geometric algebra. I stalled out at mechanics but I've now taken it off the Tsundoku pile and may giv
13.
by musgravepeter 5y ago
I had a quick look and this seems like a solid, concise intro to GR. The article https://people.carleton.edu/~nchriste/PTO000041.pdf gives an overview of the ways and books to learn GR. It does not cover some more rece
14.
by musgravepeter 5y ago
Snap. I am also a physicist trying to learn math. In my case it's: - Introduction to Analysis (Mattuck) - Elementary Differential Geometry (Pressley) both chosen because they have solutions in the book, which I find important for self
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by musgravepeter 5y ago
Steinhardt's book "The second kind of impossible" describes his involvement with quasi-crystals. It's very worthwhile.
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by musgravepeter 5y ago
Really looking forward to the "So you want to learn math" list!
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by musgravepeter 6y ago
Penrose's contribution is reviewed in https://arxiv.org/abs/1410.5226
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by musgravepeter 6y ago
"The discovery still leaves much of the universe undetected. About 85 per cent of its matter is thought to be "dark matter" — that which is undetectable using ordinary methods." If I understand the abstract, it reports f
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EinsteinPy: A Community Python Package for General Relativity(arxiv.org)
2 points by musgravepeter 6y ago|0 comments
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by musgravepeter 7y ago
The BBC podcast "13 minutes to the moon" is very worth-while.
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by musgravepeter 7y ago
I am enjoying "The Moon, A history for the future" by Oliver Morton.
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by musgravepeter 7y ago
My perception (as a lapsed PhD physicist) is the community takes on a new formalism when it has to i.e. there are new results that can only be derived with the new formalism. A formalism that allows slightly better derivation of existing
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by musgravepeter 7y ago
I took that idea to its extreme and released "Geodesic Asteroids" on iOS (free) a couple of years ago. You can play on the 2D map or an embedded torus. There is also an old blog post I wrote at the time: http://nbodyphy
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by musgravepeter 7y ago
Depends on what the math re-learning covers. You'd need differential equations and 2nd year calculus. A good choice for less math might be "Gravity from the ground up" by Schutz.
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by musgravepeter 7y ago
Physics from symmetry looks really fun. Another book for the pile! (see https://en.wikipedia.org/wiki/Tsundoku )
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by musgravepeter 7y ago
Mind reader! Yeah, I'm keen to give that a go. Interestingly it is not a problem that is very easy to parallelize, since every mass will affect every other mass. There may still be some cool ways to use ECS though.
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by musgravepeter 7y ago
Some of the Unity asset work might fit that description e.g. provide a library of chaotic attractors packaged for use in a game. My grad work had no connection to data/stats and I have not bumped into any low hanging fruit where Rieman
28.
by musgravepeter 7y ago
(PhD, 1996 in general relativity) Embedded graphics drivers for real-time systems. I keep the physics part of my brain alive by developing physics based Unity assets (nbodyphysics.com) and supporting a package for GR on github (grtensor). I
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by musgravepeter 8y ago
Three standouts for me this year: Educated - Tara Westover: Perhaps the best memoir I have ever read. Killing Commendatore - Haruki Murakami. Japanese mystical fiction. An Absolutely Remarkable Thing - Hank Green. A really fun page-turner
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Stability of planets in triple star systems(arxiv.org)
1 points by musgravepeter 8y ago|0 comments

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