timmdeeg's latest activity
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Ttimmdeeg reacted to mitchell porter's post in the thread Undergrad MOND disproved at large scales with
Informative.
It's standard MOND lore that MOND doesn't quite work for galaxy clusters - it has its own "missing mass" problem, or need for dark... -
Ttimmdeeg replied to the thread Undergrad MOND disproved at large scales.So is MOND a theoretical framework which makes predictions? If yes, should this framework hold scale independent? In other words would...
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Thttps://arxiv.org/pdf/2604.14327 Fig.1 and Fig.2 seem to show that MOND is disproved at large scales due to measurements of galaxy...
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Ttimmdeeg replied to the thread High School Do Dark Energy and the Casimir effect indicate Exotic Matter could exist?.See also Jaffe 2005 https://arxiv.org/pdf/hep-th/0503158 The Casimir force is simply the (relativistic, retarded) van der Waals force...
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Ttimmdeeg reacted to Andy Resnick's post in the thread Our Beautiful Universe - Photos and Videos with
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Clear nights have been scarce lately, but tonight I was able to image Jupiter and the Galilean moons: This is a 200% crop from a... -
Ttimmdeeg replied to the thread Undergrad Are Alternative Dark Energy Models Treated More Favorably Than MOND?.https://arxiv.org/pdf/2412.15143 We compare the standard homogeneous cosmological model, i.e., spatially flat ΛCDM, and the timescape...
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Ttimmdeeg replied to the thread Undergrad Help Understanding the Hubble Constant's Units.That's just natural, nothing paradox or unexpected.
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Ttimmdeeg reacted to sophiecentaur's post in the thread Undergrad Help Understanding the Hubble Constant's Units with Like.
You could say the same about any measurement unit. We rely on past calibrations and our graphs etc. to give the distance from a given...
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Ttimmdeeg replied to the thread Undergrad Help Understanding the Hubble Constant's Units.If we talk about cosmological distances, aren't these spacelike? So, we would need the knowledge of the expansion history to know them...
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Ttimmdeeg replied to the thread Is the quantum wave function a real object or a mathematical tool?.What exactly is the difference between the wave function being an object and being ontic in case it is ontic according to a certain...
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Ttimmdeeg replied to the thread Is the quantum wave function a real object or a mathematical tool?.Whether or not the wave function real is in the sense of ontic is interpretation dependent.
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TNo. Yes, we do. "Infalling mass" is a specific region of spacetime, occupied by nonzero stress-energy. A portion of that region is...
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Ttimmdeeg replied to the thread Undergrad Black hole questions.Isn't this in contradiction to ? We don't distinguish infalling mass from mass of the black hole.* So, either the "mass" of the hole...
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Ttimmdeeg replied to the thread Undergrad Black hole questions.Is this true regarding infalling mass too? If stress-energy of infalling mass doesn't disappear then how would this fit with...
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Ttimmdeeg reacted to DennisN's post in the thread Our Beautiful Universe - Photos and Videos with Like.
Artemis II has now launched and is on the way to the Moon: NASA's Artemis II Moon Mission Lifts Off By pure coincidence I shot the...
