Started by Hydra009, May 22, 2020, 11:25:30 PM
Quote from: Hydra009 on May 22, 2020, 11:25:30 PMA lot of my favorite sci-fi touches on quantum mechanics, and there are these huge discussions about it and I can't help but think that it's not portrayed in a realistic way but I don't know enough on the subject to dispute anything convincingly.So I'm looking for a smart person to bounce some stuff off in an explain-it-like-I'm-a-freshman sort of way. Bear in mind that I'm a total layman about this stuff. Undergrad level, if that.1) Quantum superposition. I heard it like this, a photon "knows" when it's being watched, and will change its state depending on whether it's observed.My understanding is that our methods of observation inherently cause minor disturbances in what's being observed - like using flash photography. Photons aren't being sneaky or anything. Matter isn't actually in multiple configurations at once - it's just that we can't observe them with much precision, so we consider it "blurry" until we get a nice, close look.2) Many Worlds interpretation. Are there actually multiple universes where things unfold differently? They brought up Schrodinger's Cat but I'm pretty sure that that whole thought experiment was intended to throw shade on Many Worlds - there's no box where a cat's possibly alive and possibly dead, it's either one or the other.3) Can quantum entanglement lead to FTL communications or travel?4) Black holes aren't really holes, are they? You can't throw an apple down one and it appear in some other universe, right? My understanding is the "hole" part isn't literally true, just a handy metaphor - stuff goes down, basically nothing* comes back out. But it's more like an extremely compressed star that warps space to such a degree that basically nothing* can escape once it gets close enough - it's less like a hole and more like a pit that no one can climb out of.(* except hawking radiation)5) Is our universe predictable from the onset - a person with full knowledge about it could correctly predict how it's going to look a billion years from now (a clockwork universe)? Or does the fuzzy nature of quantum physics allow it to go down unexpected roads to unforeseeable outcomes?
Quote from: Hydra009 on May 22, 2020, 11:25:30 PMOr does the fuzzy nature of quantum physics allow it to go down unexpected roads to unforeseeable outcomes?
Quote from: Unbeliever on May 24, 2020, 12:59:41 PMThe Physics of Immortality was a good read, by a real scientist, but it was, in the end, just Christian woo.
Quote from: drunkenshoe on August 24, 2020, 04:46:26 AMI sometimes think, the history of that path is hidden in the history of Quantum Mechanics itself. After the Copenhagen Interpretation crisis there is this silent period after Bohr and Einstein and it seems like with the first import wave of Buddhism to the West -specifically to the US- in the universities in the 60s this whole thing got messed up that way back then. There was a part like that in the documentary made by Jim Khalili. Whatever happened then seems to have started a process that matured for decades along the lines of 'quantum is looove of divine creation and peace and the sweet impact of the spirit up my ass' mumbo jumbo. You can apply that to everything. I have just created 'an invisible hand of quantum' and the peaceful impact of its divine smack on humanity we'll receive upon its culmination. Let's write a book on it.
Quote from: Unbeliever on August 24, 2020, 08:21:14 PMI think it was Weinberg who said that the universe may be the ultimate free lunch.
Quote from: Unbeliever on August 24, 2020, 10:36:59 PMI've had free breakfasts before, albeit continental.