nyc111

8 ms·

91.
Fractions and the Stern-Brocot Tree(youtube.com)
1 points by nyc111 2y ago|0 comments
92.
Farey Sequence(en.wikipedia.org)
4 points by nyc111 2y ago|0 comments
93.
by nyc111 2y ago
"(as I’ve argued at length elsewhere)" Everything he writes is "at length". This looks like an interesting read with good ideas but it is so long and has no structure that I gave up reading. It may help to give an abst
94.
The Meaning of the Metric Tensor(youtube.com)
1 points by nyc111 2y ago|0 comments
95.
by nyc111 2y ago
I couldn’t agree with her more. They’ve turned physics into scholastic sophistry.
96.
by nyc111 2y ago
Requires subscription to Medium.
97.
by nyc111 2y ago
"For photons there is [] no inertial frame of reference where photon will [appear to] be stationary (relative or absolute means nothing actually)." I added my comments to your sentence. Obviously, if photon appears to be station
98.
by nyc111 2y ago
"In special relativity the important concept is the frame of reference." I study motion not special relativity. Motion is a fundamental concept. We don't need to use Einsteinian lingo to study motion.
99.
by nyc111 2y ago
I was reading this article carefully. I noticed that he uses the word "stationary" to mean both "absolutely stationary" and "relatively at rest". The reasoning in this article is based on conflating and mixing
100.
by nyc111 2y ago
Spacetime in physics has always been an imaginary mathematical construct. Spacetime is not something that exists in reality. Take the deflection of light equation used to compute the deflection of light in General Relativity: alpha = (4GM)&
101.
by nyc111 2y ago
Before VAR football was played in real time. The referee who was in the pitch had the sole authority to stop the game and assign the appropriate penalty according to the rule book. Now football is not played in real time. A committee of ref
102.
by nyc111 2y ago
"This guy is popular with the CS crowd because of his views on infinity & constructivism" I didn't know. I'll try to find his videos on infinity. I agree with his views on axiomatic set theory. To me the axioms of ZF
103.
by nyc111 2y ago
This is a well-known rite of passage in academic physics and mathematics. But it is usually celebrated by junior members of the profession who think they’ve made it because some layman wrote them to ask their opinion on some topic. But the
104.
Modern "Set Theory" – is it a religious belief system? (2018)(youtube.com)
2 points by nyc111 2y ago|3 comments
105.
by nyc111 2y ago
Hubble observed less than 30 galaxies. I could never understand how they concluded that the _whole universe_ was expanding by observing a mere 30 galaxies. It doesn't make sense in terms of statistics. The sample is too small, more imp
106.
by nyc111 2y ago
As usual comments here are more informative than the article. But no one mentioned that this is not a physics subject. The question “What is a particle?” belongs to philosophy not to physics. The problem for physicists is that they assume t
107.
by nyc111 2y ago
"So much for atoms being uncuttable." This is a very common misunderstanding of what Democritus' atom means. Strassler forgets what he wrote a few sentences ago. Dalton named "atom" what he believed to be indivisibl
108.
Why the words we use in physics obscure the true nature of reality(newscientist.com)
3 points by nyc111 2y ago|1 comments
109.
Lloyd Kaufman, Who Saw Answers Behind the 'Moon Illusion,' Dies at 97(nytimes.com)
2 points by nyc111 2y ago|0 comments
110.
by nyc111 2y ago
I tried several paragraphs from HN Guidelines and it could not come up with anything simpler or better. It produced some pointlessly snarky remarks.
111.
by nyc111 2y ago
I checked the links and I think it's amazing and it answers with Latex formatted notation. But I was curious and I asked something very simple, Euclid's first postulate and I got this answer: Euclid's Postulate 1: "Throu
112.
The Math Doctors(themathdoctors.org)
7 points by nyc111 2y ago|0 comments
113.
by nyc111 2y ago
I wasn't clear if they bought the "Moleskine" trademark, did they? Apparently the original company had been sold before.
114.
by nyc111 2y ago
I wonder if such an office is sustainable in the long run. I never saw an office like this. The video is about a worker in the PR department in a staffing company.
115.
Day in the life of typical Tokyo office worker (2019)(youtube.com)
1 points by nyc111 2y ago|1 comments
116.
by nyc111 2y ago
The article mentions 26 constants but it seems there is more than that https://en.wikipedia.org/wiki/List_of_physical_constants And I think if the constant is a ratio, like the fine structure constant, https:/&#x
117.
by nyc111 2y ago
Same goes for their new thorium “clock”. They define it as their unit to measure everything else. They assume that all constants may be changing but not their thorium clock. I think this is an unjustified assumption.
118.
by nyc111 2y ago
The subject of study of physics is "physical quantity" which is defined as a number with a unit. Physical quantity doesn't have to be a "physical" quantity. So physics does not study exclusively physical objects. I
119.
by nyc111 2y ago
Thanks, this was helpful.
120.
by nyc111 2y ago
Thanks for posting this. I downloaded and was playing with it. But I'm puzzled about new note creation. When I type in the title next to the equal sign, I need to move the cursor below the date line to compose the note. Shouldn't

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