kmm

8 ms·

31.
by kmm 2y ago
> You cannot decay if you don’t experience time That's a common misconception, there's no a priori reason a particle without a restframe can't decay. For all known particles with a finite lifetime we give this lifetime as
32.
by kmm 3y ago
The Hubble constant is not necessarily derived from the cosmological constant. To be clear, it's not even a constant either, it's a proportionality factor between the recessional velocity of distant objects and their distance from
33.
by kmm 3y ago
Being easy to prove doesn't make it unremarkable. Lots of theorems, including this one, have straightforward proofs once you are given the exact formulation. The tricky part is coming up with the idea for the theorem itself. I remember
34.
by kmm 3y ago
That doesn't sound right. Relativistic mass as a concept is avoided in modern physics because it doesn't yield much insight and is hard to keep consistent. Involving gravity only makes it worse, because it's very hard to cons
35.
by kmm 3y ago
The line of sight argument is nice and succinct, and of course in some sense correct, but I've come to view the paradox in a somewhat different way: if all you have in a static and eternal universe are everlasting sources of energy, th
36.
by kmm 3y ago
I find Bayes' theorem is a bit more intuitive when written out not for probabilities but for the odds ratios, i.e. the ratio of the probabilities of something being true and something being false. Quite often one of these two will be c
37.
by kmm 3y ago
For easy of copy-pasting, the FEN for the puzzle with the abundance of knights is N1n1NN2/qNN5/5NK1/1n1nNnNN/n1Pn4/kn2n1NN/nRR1nn2/3nn1Nn w - - 0 1 I guessed the first move right, but calculating th
38.
by kmm 3y ago
After doing some cursory Google searches on relative motion in orbit, establishing a rotating frame seems standard to me. Even the original Clohessy-Wiltshire paper[1] starts by doing that. As a physicist, though admittedly not working in o
39.
by kmm 3y ago
Enjoy https://gist.github.com/kaspermeerts/781f0137b361b51224dcab7... https://gist.github.com/kaspermeerts/b6f158b1278de307e48a200... I hope it's readable
40.
by kmm 3y ago
Here you go https://gist.github.com/kaspermeerts/781f0137b361b51224dcab7... https://gist.github.com/kaspermeerts/b6f158b1278de307e48a200... Haven't looked at it in five years, but it should p
41.
by kmm 3y ago
They're in two gists here: https://gist.github.com/kaspermeerts/781f0137b361b51224dcab7... https://gist.github.com/kaspermeerts/b6f158b1278de307e48a200... I just hacked it together, but I do
42.
by kmm 3y ago
I don't remember exactly, it's been 5 years, but I remember there were almost 4000 loops. The loom is a little less than a meter across, but most loop don't span the entire width of the loom, so half a meter per loop is a goo
43.
by kmm 3y ago
A few years ago I made a "string art" portrait for my girlfriend at the time. It's made from a continuous† 2 km long black thread, woven around a loom made from a bicycle wheel rim. I'm still very proud of how it turned
44.
by kmm 3y ago
Galactic rotational velocities are on the order of 100 km/s, which, though blazingly fast by human standards, is so slow compared to the speed of light that special relativistic effects are completely negligible. Moreover, it's no
45.
by kmm 4y ago
I think he means the link will go to a page in Russian. Though the Russian term is indeed гаражная распродажа, which indeed just translates word-for-word to "garage sale"
46.
by kmm 4y ago
Why are you bringing up Kalibrs if the parent was talking about S-300 type missiles?
47.
by kmm 4y ago
Let's assume male heights are distributed according to a pdf p(x;μ,σ) for a given mean and standard deviation, and assume the female heights are identically distributed with a mean lower by two standard deviations p(x;μ-2σ,σ) (which se
48.
by kmm 4y ago
> a 2013 study conducted in the Netherlands found that women were taller than their male partners in just 7.5 percent of cases Isn't that entirely to be expected just because men are on average taller than women? As a very quick &#x
49.
by kmm 4y ago
Aztec pyramids have a characteristic stair-stepped design, which when viewed from atop probably looks reminiscent of a tiling. A similar story probably applies to Aztec Codes https://en.wikipedia.org/wiki/Aztec_Code
50.
by kmm 4y ago
There's a beautiful video by Mathologer about this subject, giving some intuition on why the outside areas are "frozen" https://www.youtube.com/watch?v=Yy7Q8IWNfHM
51.
by kmm 4y ago
Originally ß arose as a ligature of s and z, or rather ſ and ʒ. In many older texts, or even current fonts, the second part of the ligature is indisputably a long-tailed ʒ https://en.wikipedia.org/wiki/%C3%9F
52.
by kmm 4y ago
The weird thing is that I'm quite good at puzzles like these, but I'm garbage at things like chess (well, I have a 1050 blitz rating on lichess, which isn't terrible, but it's not good either). You'd think it would
53.
by kmm 4y ago
My guess was that boxes of the same color on the same side of the line sum, but boxes of the same color on different sides of the line cancel each other out. That yielded an answer that was one of the 5 given possibilities.
54.
by kmm 4y ago
This doesn't seem right to me. The relation between temperature and the kinetic energy of particles in a gas only refers to their chaotic, unordered motion. There is no reason why a directed bulk motion would have a compensatory effect
55.
by kmm 5y ago
Protein shakes and workouts wouldn't lead to a higher rate of cell division in the breast, would it? Those cells just go through their natural turnover, influenced mostly by estrogen (which actually has been suspected to play a role in
56.
by kmm 5y ago
The original page linked in article seems more appropriate than the link itself: https://gciruelos.com/what-is-the-roundest-country.html Something is off with his dataset though, while №17, Monaco, looks quite round-ish in
57.
by kmm 5y ago
Only two of the three neutrinos need to be massless, though that would be quite a curious asymmetry, and everyone expects all three to have mass. A massless particle might not have a restframe or experience proper time, but it still propaga
58.
by kmm 5y ago
This is why I semi-seriously propose that the animal which has been portrayed the most times would be the bull, as the capital A letter derives from a hieroglyph depicting a bull's head, which was turned upside down at some point, and
59.
by kmm 5y ago
For context, I'm a PhD researcher in physics. I can't imagine ever going back to working from home, and I'm dreading the inevitable day the next pandemic hits. The experience of being able to casually to someone's office
60.
by kmm 5y ago
No, that is an analysis of a single position, not a game. The big button under every game which says "Request Computer Analysis" is done on fishnet as well, it literally says "Stockfish 14.1 server analysis".

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