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Any chance this thing is using dark matter as reaction mass? We're confident that dark matter exists because it's the only thing that perfectly explains the evi
by mrob 10y ago
Any chance this thing is using dark matter as reaction mass? We're confident that dark matter exists because it's the only thing that perfectly explains the evidence from gravitational lensing of colliding galaxies (eg. https://en.wikipedia.org/wiki/Bullet_Cluster https://en.wikipedia.org/wiki/Bullet_Cluster ). Finding a way to interact with dark matter sounds much more plausible than breaking thermodynamics.
- dozzie 10y agoPlease read where the "dark matter" term came from. It's not a faerie dust that facilitates magic use. It's just a hypothetical matter in the universe that we can't observe, because for some yet-unknown reason it doesn't emit light. There's no reason it can't be just regular matter.
- mtpro 10y agoNot only does it not emit light, it does not interact with electromagnetic waves in any way.
- JoeAltmaier 10y agoAnd it doesn't obscure light - doesn't leave a shadow. No, its not regular matter at all. Its definitely something strange.
- rebolek 10y agoIf it is something at all and not only a flaw in our theories.
- Zigurd 10y agoCalling it "inexplicable gravity thing that makes galaxies work" does not exude confidence.
- gizmo686 10y agoNeutrinos don't interect with EM either, so just being "dark" is not outside of well established physics. The only thing strange about "dark matter" is not that it is dark (eg, not interacting with the electromagnetic force), but that none of the dark particles we already know about can explain the effects that we attribute to dark matter.
- kleigenfreude 10y agoAccording to Verlinde, there is no dark matter. Tell me how he's wrong point-by-point. Just because gravity is emergent doesn't mean it still cannot have effects similar to what's been perhaps wrongly attributed to dark matter. You can't just say "Bullet Cluster" and "Dragonfly 44" and piss all over it without explanation. http://phys.org/news/2016-11-theory-gravity-dark.html http://phys.org/news/2016-11-theory-gravity-dark.html http://www.forbes.com/sites/briankoberlein/2016/11/08/solution-to-dark-matter-proposes-that-gravity-is-an-illusion/ http://www.forbes.com/sites/briankoberlein/2016/11/08/soluti... https://arxiv.org/abs/1611.02269 https://arxiv.org/abs/1611.02269
- mrob 10y agoRelevant XKCD comic: https://xkcd.com/1758/ https://xkcd.com/1758/ I'm in no way qualified to give any technical judgement on Verlinde's paper, but I'm aware that modified theories of gravity have been around for a long time without much success. Of course I'd like it if some elegant theory could be found that fit the evidence better than dark matter, but going by past attempts I'm not anticipating this one will.
- kleigenfreude 10y ago"First they ignore you, then they laugh at you, then they fight you, then you win." In the 3rd step.
- EliRivers 10y agoThey also laughed at Bozo the Clown.
- kleigenfreude 10y agoDid Bozo the Clown ever say Fuck You?
- kleigenfreude 10y ago