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If I understand correctly, MOND is suggesting that gravity behaves differently at sufficiently large scale (galactic), similar to how we observe different physi
by GordonS 3y ago
If I understand correctly, MOND is suggesting that gravity behaves differently at sufficiently large scale (galactic), similar to how we observe different physics at a quantum level?
- lisper 3y agoThe analogy is a teensy bit strained but you are substantively correct.
- samus 3y agoMOND and DM try to explain the same phenomena, and the debate can probably be settled on way or the other by looking at enough interesting galaxies, or by finding dark matter or definitely ruling out that it exists. GR and Quantum Mechanics are not even really talking about the same thing and use incompatible mathematical frameworks. Another problem is also that there are actually not so many phenomena that we would need Quantum Gravity for. Particle physicists are yearning to find experimental evidence that would force us to retire the Standard Model to the history books. And their event horizon makes it kinda hard to study what is going on inside black holes.
- catlifeonmars 3y agoAs a layperson, it’s hard to tell from the debate of evidence I read elsewhere in the comments: what are the falsifiable predictions of e.g. DM and MOND?
- jfengel 3y agoI wouldn't have put it that way, since the quantum/classical transition is an emergent phenomenon without additional parameters, while MOND proposes a new term being a added to the physics. Still, at a broad level there are similarities, yes. In QM scale practically has a life of its own -- made explicit in the Copenhagen interpretation.
- adastra22 3y agoWhat? Quantum physics definitely adds new terms…