The Universe - Created Out Of Nothing?
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@SuzLa1 The whole video comes from a faulty assumption. "Let's assert that some kind of space-time quantum foam sort of something existed before our universe began." Other than this being very scientific, it still does not account for the origin of the space-time quantum foam sort of something. Did it create itself?
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The other place where stuff appears out of nowhere due to the Uncertainty Principle is near the event horizon of a black hole. Pairs of particles appear out of nowhere right at the event horizon and sometimes the two particles never get a chance to recombine and vanish because one of them falls into the hole and the other gets to go on living by escaping the hole. This is the phenomenon that brings about black hole evaporation.
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Yes, all of science is "to the best of our knowledge". So what? The typical point being made by a theist who says that is to accuse science of not really knowing for sure about everything, followed immediately by the non sequitur of "then god must have done it". Science is the best tool we have for understanding the universe. It is self-correcting over time as more progess is made. Throwing up our hands and saying "god did it" is just a lazy copout.
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Which doesn't mean that the virtual particles aren't real. They're real, and appearing out of thin air. But they're living on borrowed time, literally, and the Uncertainty Principle requires them, all things being equal, to vanish again almost immediately. But during that time period "the universe" is permitted to be uncertain whether there is a small amount of matter there (that wasn't there a moment before) or not, i.e. a particle can appear "out of thin air"....
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So when you are staring into the glowing coals of a campfire, with all those red-colored photons entering your eye, each one of them has popped into existence out of thin air near (associated with) an electron in an atom in one of the coals, been given a quantum of energy from the atom in the heat of the fire going to a lower energy state, and is thereby allowed to no longer be merely "virtual" but to be persistent and have plenty of time to fly across over to your eye.
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....which only need a little push, a little energy from outside, to escape and become real. An electron moving from an excited state to a lower state in an atom gives the excess energy to one of its virtual photons and lets it fly free..." Thus, most of the virtual photons that are literally coming from nothing are allowed to come into existence and exist for a VERY short time before disappearing because of the Uncertainty Principle's uncertainty about time/energy(mass)....
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from In Search of Schrodinger's Cat by John Gribbin, pg. 196: "The uncertainty principle applies to the complementary properties of TIME and ENERGY, as well as to position/momentum...An electron does not exist in isolation, because it can borrow energy from the uncertainty relation, for a short enough period of time (less than 10 to the -15 seconds), and use it to create a photon...It is as if each electron is surrounded by a cloud of "virtual" photons, which.....
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The problem with this theory of the origin of the universe is that it relies on quantum mechanics, not because quantum mechanics is a shaky theory, but because it has so many facets which defy common sense here in the macro-world. If the typical theist can, with a straight face, announce that evolution/natural selection is crap, in the face of all the tangible evidence for it, how much more impossible it would be to convince a theist that the universe could be no more than a quantum fluctuation!
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@SuzLa1 Actually they're a lot better than religious people, for they admit that they don't know in the absence of evidence. And they continue to work on finding out the answer. Religious people make the claim that their holy books already provide the answer and dismiss all evidence that contradict their faith. For religion, the lesser the evidence, the more they believe it.
petion2010 2 months ago 5
The laws of physics break down when thinking about before the big bang. If scientists try to pretend they know what happened, they're no better than religious people.
SuzLa1 3 months ago 5