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quote:Originally posted by Solvay_1927ANALOGY:There's a really good analogy in the book "Quantum" by Jim Al Khalili which might help you understand what a wavefunction is. To paraphrase it slightly (to ensure I don't breach any copyright laws):Imagine a burglar is out on a crime spree one night (a one-man crime wave, you might say). You know he's just burgled 101 Station Road a couple of minutes ago. But you don't know where he is now. So you get out a map of the town and assign probabilities to where he might be now. To start with, houses around Station Road are most at risk of being burgled next. But as time passes, the area he's likely to be in grows over time. (His "position wavefunction" spreads out.) And it might not spread out uniformly - perhaps he's more attracted to posh streets but less interested in houses around the police station.This "crime wave", like any wavefunction, isn't something physically real, it's just a set of abstract numbers assigned to each position on the map.And also, when you hear a report that he's just burgled another house, you have to re-do your figures (the wavefunction "collapses" to a small area around this new house) - but over time the wavefunction spreads out yet again.Hope that helps.Solvay.
quote:Originally posted by Solvay_1927Hmmm, I suppose a virtual burglar would be an opportunistic thief - someone who wasn't planning to be a thief, but gets tempted when an opportunity falls into their lap, so they just "pop up out of nowhere" and then disappear again!And an anti-burglar is something that, when it collides with a burglar, explodes into heat and energy. So that must be a copper then! (This analogy just gets better and better, doesn't it.)FOOTBALLERS’ QUOTES #2 : "Argentina are the second-best team in the world, and there's no higher praise than that." - Kevin Keegan
quote:The force acting between them would be handcuffs?
quote:Does this mean that a copper inhabiting a world only inhabited by other coppers, would behave almost indistinguishably from a burglar inhabiting a world only of burglars?