PhysicsCarl

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PhysicsCarl

@FlutterCarl

If MOND a₀ is connected to cosmological density (a₀ ∝ sqrt(ρ_c)), then a₀ must evolve with redshift as a₀(z) = a₀(0) × E(z), where E(z) = sqrt(Ω_m(1+z)³ + Ω_Λ).

Charlotte, NC Katılım Şubat 2021
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PhysicsCarl
PhysicsCarl@FlutterCarl·
Physicists have spent 40 years and billions of dollars searching for dark matter particles. Zero found. Meanwhile this equation predicts galaxy dynamics to 0.03%: a₀ = cH₀/5.79 One line. Zero dark matter. Zero free parameters. Maybe try the math?
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Sabine Hossenfelder
Sabine Hossenfelder@skdh·
Researchers from the University of Bonn in Germany have re-analysed observations of galaxy clusters and argue that much of the clusters’ “missing” mass may not be exotic dark matter but ordinary matter in the form of faint stellar remnants. Galaxy clusters have long required about five times more mass than what is visible to explain the observed galaxy motions, an observation that is usually attributed to dark matter. But the authors combined gravitational lensing, X-ray, and optical data with models of star formation and found that the total mass in stars and their remnants could be almost twice as high as previously estimated. This matters because Modified Newtonian Dynamics (MOND), an alternative to dark matter, seems to not work well for galaxy clusters. The discrepancy between the MOND predictions and the observations from galaxy clusters almost goes away with the new estimate, while dark matter no longer works all that well. The Abell 209 galaxy cluster. Credits: ESA/Hubble & NASA, M. Postman, P. Kelly
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Hello math
Hello math@skglearning·
In 1937, Dirac formulated the hypothesis that the strength of gravity is inversely proportional to the age of the universe (G ∝ 1/t) and that the mass of the universe is proportional to the square of the universe's age (M ∝ t²) to explain the following coincidences. #physics
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PhysicsCarl
PhysicsCarl@FlutterCarl·
@Samuel_Gregson Mond acceleration scales with cosmic density. Where can I pick up my Nobel prize please?
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Sam Gregson
Sam Gregson@Samuel_Gregson·
It didn’t cost anything the first 80 times your garbage was litigated. Now it costs constant whining, innumerable idiot podcasts, the misleading of the public on important scientific matters and my last nerve.
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Sam Gregson
Sam Gregson@Samuel_Gregson·
Post 1984 goal list: - Discover dark energy - Quantise gravity at low energies - Discover the Higgs boson - Discredit angry crank - Discover top quark - Measure neutrino oscillation/mass - Detect grav waves - Develop holography - Don’t take new idea seriously - Get milk
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Crémieux
Crémieux@cremieuxrecueil·
I am often shocked by how many seemingly rational academics believe strange, false assertions if they come from places of perceived authority. I don't know many of those people who would actually suggest just believing any odd thing they say just because of their authority.
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Huzaifa Ansari
Huzaifa Ansari@Huzaifaflutter·
@FlutterCarl @Hassaan_PHY One suggestion if you know any local physicist is to ask him to look into it and if possible u can make academic paper and submit it for review may they help you it is phycology people don't take seriously the outsiders
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Superconformal Hassaan
Superconformal Hassaan@Hassaan_PHY·
1. Everyone else doesn't agree that physicists have lost the plot. There is a significant number of people who think this (often lay audience led astray by people like yourself), but certainly not everyone. Whoever is under the impression that everyone thinks this way is stuck in an echo chamber. 2. If a large number of people believe something, that doesn't make it true. It is more about public perception, which is clearly not dictated by facts (especially today). Large numbers of people have had many other erroneous beliefs in the past (a long list can be provided here) 3. Theoretical Physics isn't as successful in the 21st century as it was, say, in the first quarter of the 20th century. However, the reasons for this fact don't include the talking points that you have helped spread, e.g., "Physicists are lying for grant money". #physics #scicomm
Sabine Hossenfelder@skdh

he's entirely right of course. even if you think he is wrong, at the very least physicists should think about why everyone else agrees they've lost the plot.

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Huzaifa Ansari
Huzaifa Ansari@Huzaifaflutter·
@FlutterCarl @skdh I see you tag @skdh I use to watch her content and i agree with you that today's physics is some type of mathematical juggling where every axiom is derived from math it's like a framework which builds upon math which try to understand empirical or natural science
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PhysicsCarl
PhysicsCarl@FlutterCarl·
Physicists have spent 40 years and billions of dollars searching for dark matter particles. Zero found. Meanwhile this equation predicts galaxy dynamics to 0.03%: a₀ = cH₀/5.79 One line. Zero dark matter. Zero free parameters. Maybe try the math?
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Huzaifa Ansari
Huzaifa Ansari@Huzaifaflutter·
@FlutterCarl @skdh Bro u derived this formula can u share any article or doc like how u derived this formula
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Walter Kirn
Walter Kirn@walterkirn·
Eric Weinstein and I are going to get a quark or two closer to the bottom of "the UFO thing" someday. Promise! But it may take some time, so please stay occupied while we do.
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Curiosity
Curiosity@CuriosityonX·
🚨: James Webb confirms there's something seriously wrong with our understanding of the universe — and reveals unknown physics exists.
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Curiosity
Curiosity@CuriosityonX·
While more data is needed, JWST’s findings force cosmologists to reconsider key assumptions about the universe's origin and development. It signals that unknown physics may be at play, reshaping our understanding of how the cosmos evolved. Source: Riess, A.G. et al. (2024). “A Precision Hubble Constant Measurement from the Hubble Space Telescope and the James Webb Space Telescope.” Astrophysical Journal Letters.Breakthrough data from James Webb suggests a serious gap in our understanding of the cosmos
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Andrew Côté
Andrew Côté@Andercot·
Instead, at high redshift they found that supernova were much dimmer than expected than if the expansion had been slowed down by gravity. On the contrary, the rate of expansion appeared to be accelerated. Lambda, the cosmological constant, was so back.
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Andrew Côté
Andrew Côté@Andercot·
This could be an incredible revolution in Cosmology. The Dark Energy model of the universe, which won a Nobel Prize in 2011, may be completely wrong. The accelerating expansion instead is simply because time runs faster in the voids between galaxies. Let me explain:
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PhysicsCarl
PhysicsCarl@FlutterCarl·
@EricRWeinstein you talk about Milgrom and his finding of a0 = cH0 (1983). There is a precise empirical relationship that I have discovered. ((c * math.sqrt(G * rho_c)) / 2 Equals 1.19 x 10^-10 The numbers just… match.
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PhysicsCarl
PhysicsCarl@FlutterCarl·
@EricRWeinstein Eric please look at my equation for the love of Christ… it’s literally the solution you are looking for.
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Eric Weinstein
Eric Weinstein@EricRWeinstein·
This time, it's different.
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Pierre-Luc
Pierre-Luc@dallairedemers·
The era of slop physics is upon us.
Ben Goertzel@bengoertzel

Quantumity is in the relation to the observer!! -- It sounds weird but the math bears it out -- sometimes a smaller system should view a larger "classical" system as a "quantum" system... Furthermore, a sufficiently complex classical system should often model ITSELF as a quantum system (roughly: because its deliberative core cannot fully perceive or model its own overall state). I lay out the arguments in detail here: open.substack.com/pub/bengoertze…

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Keşfet

@skdh @pascalkwanten @skglearning @Samuel_Gregson @martinmbauer @cremieuxrecueil @Huzaifaflutter @Hassaan_PHY