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MigL

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Everything posted by MigL

  1. Information, according to Relativity is constrained to stransfers equal to, or less than, the speed of light. Are you saying Relativity is wrong ? No, they did not demonstrate the 'reality of non-locality'. They demonstrated the absence of local realism. You can twist and bend that as much as you like, but they are NOT equivalent.
  2. Modern 'flash' memory would probably be more easily corrupted. An EMP pulse will force electrons from the conduction and semi-conduction bands, and since SSDs store electrons in a silicon gate after being deposited there by a MOSFET, they will easily lose the charge that indicates '1' or '0'. Old style rotating platter drives, that store data in magnetic domains, especially low-density ones with larger magnetic domains, may be mor resistant.
  3. In addition, whereas a classical particle 'sees' a well defined trajectory, governed by space-time curvature in GR, a quantum particle 'sees' an infinite number of probable trajectories, governed by 'probability amplitudes' derived from its wave function in QM. One is 'externally' constrained, the other, 'internally' constrained by its probability distribution. Very different models.
  4. But observations and experiments are ...
  5. Over 2000 nuclear explosions since 1945. A large number above ground. The Earth is still habitable. I don't mean to make light of the situation or possibility, but quit being such a pessimist 🙂 . ( I'll take my chances; I don't want to be at ground 0 )
  6. At the same instant in time ? You mean imultaneously ? "According to the special theory of relativity, it is impossible to say in an absolute sense that two distinct events occur at the same time if those events are separated in space." From Relativity of simultaneity - Wikipedia
  7. As a Physicist, I consider Math a set of tools that I can use to build models, that explain and make predictions about the workings of the universe. Learning the use of these tools by going 'up through the grades', would be equivalent to learning how to use your hammer and saw to initially make a bookshelf. Then framing a shed or garage, until you are finally proficient enough to frame a house. Going 'through topics' would be equivalent to taking a tool type, such as a table saw to cut lumber, a band saw to cut wood shapes, a chainsaw to cut trees, etc., and becoming proficient in all saw types before switching to another tool type. What do you want to do with your tools ?
  8. Ice cubes in scotch ? That's worse than a blend.
  9. You are considering the entangled particles and the wave function to be separate entities. They are not. Before the 'first' spin detection of the particle that fixes the spin orientation of the second particle, while entanglement persists, there are no particles, just their common wave function. That is what is meant by 'abandoning local realism'. As for my previous question and Wiki quote, I notice you again read just the parts that suit your narrative. The pertinent part was If you can't know which comes first, how can you determine which sends the 'magical' signal to the other ? Do they both ? Does neither ? This 'magical' signal is becoming more and more like the 'aether'. So many conflicting properties, no evidence, and definitely not needed.
  10. Whoa, take'er easy there, Pilgrim. I have seen"the man who shot Liberty Valence" many times. Here are a selection of quotes from the movie ... The Man Who Shot Liberty Valance - Wikiquote The Man Who Shot Liberty Valance (1962) - Quotes - IMDb Perhaps you can find your 'quote' for me, or pull up a You Tube clip ? ( always glad to be a secondary issue )
  11. I probably wasn't very clear. But I found this reference on Wiki which explains better than I did ... "The distance and timing of the measurements can be chosen so as to make the interval between the two measurements spacelike, hence, any causal effect connecting the events would have to travel faster than light. According to the principles of special relativity, it is not possible for any information to travel between two such measuring events. It is not even possible to say which of the measurements came first. For two spacelike separated events x1 and x2 there are inertial frames in which x1 is first and others in which x2 is first. Therefore, the correlation between the two measurements cannot be explained as one measurement determining the other: different observers would disagree about the role of cause and effect. (In fact similar paradoxes can arise even without entanglement: the position of a single particle is spread out over space, and two widely separated detectors attempting to detect the particle in two different places must instantaneously attain appropriate correlation, so that they do not both detect the particle.)" From Quantum entanglement - Wikipedia
  12. The Uncertainty Principle is a 'feature' of all wave-like systems. Quantum Mechanics does not allow for simultaneusly accurate determination of conjugate variables, like position and momentum. Time and energy are another pair that follow the HUP. See here Uncertainty principle - Wikipedia.
  13. I would also like a question answered ... I brought it up previously, but it was dismissed. Assume Bob and Alice are in two different frames, separated by large distance. Bangstrom confidently says that Bob makes the first measurement, and a 'signal' then determines Alice's measurement. Special Relativity tells us that there may be a question as to who made the measurement first, as they can only compare their measurements much later. Is this 'signal' then, frame dependant ? Does it travel from Bobs frame to Alice's, when he has made the first measurement in his frame ? And does it travel from Alice's frame to Bob's when she has made the first measurement in her frame ? This is indeed a 'magical' signal. Makes one suspend belief in reality between the two measurements. Which is exactly what we've been telling you !
  14. That has nothing to do with ignorance or knowledge, Peterkin. Until kids reach high school, or get a phone, the parents are their biggest influencers. Once they get to high school, or get a smart phone, their friends, social contacts, and idiots on YouTube become their biggest influencers. You better make sure they are 'grounded' ( confident, respectful and sensible ) before they get to that age
  15. I always thought the 'observer effect' was related to the fact that any observation is an interaction with the system being observed, and would necessarily 'alter' the observation by disturbing that system.. QM is, to borrow a thought from another thread, based on the fact that the quantum domain has no reality ( as we know it ) until we force it to, by making an observation ( interaction ). The HUP is a more concrete effect, that dictates the accuracy to which we can know certain related observables, and is built into the mathematical formulation of a quantum system. It is not dependant on our technical ability to measure accurately, nor is it based on whether we make a 'proxy' measurement or disturb the system with the measurement.
  16. Surely Russian Generals must realize that if Russia uses nukes, even tactical battlefield low yield types, that would be the worst thing that could happen to Russia ( although not as bad as what would happen to Ukraine ). So they have a choice to make. Do they try to prop up V Putin's ego, or do they relegate Russia to be shunned by the rest of the World, and become even more of a 'shit-hole' country ( in the words of a former President ).
  17. I bet your hourly wage went up when you showed up to your next job with a gun ... I'm not against kids helping out around the house and doing a few chores, but I do think their first responsibility is their school work. Also, keep in mind that I'm ( was ) a son, but I've never been a parent, although I treat my two nephews and neice as my own kids, and even helped each of them buy their first house. Even their friends call me Uncle Lui.
  18. 10 year olds already have a job. It's called school.
  19. No. Not 'Road Warrior', or its sequels. The original 1979 'Mad Max', where the bikers kill his wife/family. Count me as another of G Dyer fan.
  20. Try this Bell's Theorem (utoronto.ca) also includes some history and insights into 'reality separate from observation', and non-locality.
  21. Mad Max ? Is that you ?
  22. While Bangstrom continues to assume some sort of magical 'interaction' that does not involve any interaction, Eise has neatly summed up exactly what happens ... It is almost like there is no reality between measurements ( only probability amplitudes ). IOW, No ( ocal ) reality =/=> Non-local reality.
  23. As far as I know, entanglement is a fundamental aspect of Quantum Mechanics, where the quantum state of each particle affected cannot be described independently of the state of the others in the grouping. IOW, the states ( such as position, momentum, spin, polarization ) of theaffected particles in the 'entangled' grouping are represented by a single mathematical wave function, until 'decoherence' occurs due to an interaction. It was 'accepted' theory, until A Einstein, B Podolsky and N Rosen proposed the EPR paradox which violated local realism and/or causality; the original "spooky action at a distance", and Einstein's ( and Shroedinger's ) belief that unknown 'hidden' variables were involved. J Bell put the 'nail in the coffin' to hidden variable theories, and this year's Nobel Prize winners, J Clauser, A Aspect and A Zeilinger, have been recognized for estabilishing that there is no local reality. See here Quantum entanglement - Wikipedia
  24. Clauser, Aspect and Zeilinger were this year's recipients of the Nobel. ( see 'Science News' thread ) For their work in estabilishing that there is no local reality.
  25. This news may be of interest to the participants in the "Crowded quantum information" thread. The 2022 Nobel has been awarded to J Clauser, A Aspect, and A Zeilinger, for their work in estabilishing that there is no 'local reality'. ( which is not indicative of real non-locality ) The Universe Is Not Locally Real, and the Physics Nobel Prize Winners Proved It - Scientific American

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