Unsolved @kshegunov Quantum Mechanics
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@kshegunov
As per my post elsewhere, please don't hesitate to come here and ask me for my theories on quantum mechanics, which I'm sure you'd be really interested in... LOL ;-) -
Well, as this is the lounge (we are only missing the coffee machines) consider yourself asked. :)
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This is a clear signal we need a new section of the forum:
"The Dark Nerdy Cave" -
As long as no-one tries to look for a "Quantum mechanics" sub-forum we can assume it both exists and doesn't exist.
Just please don't try to look for it. -
@kshegunov
LOL, I didn't mean it seriously. I am also well aware that the world is full of laymen with their own pet theories on quantum and other physics, all of which are almost certainly worthless/of no interest to anyone other than themselves.I also would like to say I appreciate your regular & informed input on the forums, and answers to my posts. I know I sometimes put in an OT comment, I do hope that does not detract --- I like the casual, friendliness here, I am used to stackoverflow where you get penalized or executed by hostile members for anything frivolous or not directly relevant....
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@JNBarchan said in @kshegunov Quantum Mechanics:
LOL, I didn't mean it seriously. I am also well aware that the world is full of laymen with their own pet theories on quantum and other physics, all of which are almost certainly worthless/of no interest to anyone other than themselves.
Perhaps, but the flat earth (conspiracy) theory is rather funny at least. ;)
I also would like to say I appreciate your regular & informed input on the forums, and answers to my posts. I know I sometimes put in an OT comment
Thanks!
I do hope that does not detract
You'd get a notice in chat if it does, or a moderator will fork it into another topic. I myself am rather lenient on that (see below).
I am used to stackoverflow where you get penalized or executed by hostile members for anything frivolous or not directly relevant....
Well, if that were the case here, @tekojo would've had put me on the chopping block more than anyone else ... :D
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@JNBarchan said in @kshegunov Quantum Mechanics:
I like the casual, friendliness here, I am used to stackoverflow where you get penalized or executed by hostile members for anything frivolous or not directly relevant....
That even extends to Questions asked and anwered 100 times over. AKA:
My Program works when it`s started from QtCreator but not when I click on the exe
I'll blame that partially on the bad topic search of this forum, in most cases its easier to simply use google instead of the on side search ;-)
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@J.Hilk search is hard. I use google to search the forums too :)
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@tekojo said in @kshegunov Quantum Mechanics:
I use google to search the forums too
Don't we all ... ^_^
Btw, a nice one on the QM forum's existence. It reminded me of this particular meme:
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I will post my own fascinating queries in this thread in due course --- I have spent so much time in the forum today that I desperately need to do some actual work....!
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@kshegunov said in @kshegunov Quantum Mechanics:
but the flat earth theory is rather funny at least
It's not funny man! they are lying to humanity!
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@VRonin
Yeah, well, I'm afraid so are the people I know who insist The Earth is about 4,000 years like in The Bible, evolution is not real, and dinosaurs either didn't exist and the bones have been "planted" or they lived about 3,500 years ago for a bit.... -
From what I read, its not so much the theory that earth is flat, but that all pictures/video we have of earth in space is made by NASA, and officially graphically revised which is actually true, and therefore #FakeNews.
On that note #Live
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@J.Hilk
For the record, The Greeks (the ancient ones, not the ones in the EU who borrow a lot of money) knew it was curved and measured its radius purely from horizon/sun/"clock" stuff, so can't see how NASA can be blamed for faking it :)Whereas going to The Moon was clearly really just like Capricorn One....
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@J.Hilk said in @kshegunov Quantum Mechanics:
but that all pictures/video we have of earth in space is made by NASA
http://www.bbc.co.uk/news/blogs-trending-30210230
It's even a great south asian restaurant if you happen to be in the area
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@kshegunov , and other physicists:
OK then. 2 initial quantum questions:-
What does the empirical demonstration of Bell's Inequality Theorem thing tell me about the physical world I inhabit?
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So what actually happened when they did the experiment on Schrödinger's cat?
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@JNBarchan said in @kshegunov Quantum Mechanics:
- What does the empirical demonstration of Bell's Inequality Theorem thing tell me about the physical world I inhabit?
Not much as far as I know. Just that there can be no hidden variables in a quantum-like theory. Can't elaborate much on it as I'm not that familiar with the whole formalism.
- So what actually happened when they did the experiment on Schrödinger's cat?
As with any thought experiment - at the end of it they got a headache ;)
The cat is just an metaphor that tries to illustrate the principle of superposition in QM, but many people fundamentally misunderstand it and think it's bizarre and/or wrong. Basically it boils down to a very simple idea - you have a system with 2 pure states (i.e. the cat is alive, or the cat is dead, you could make the argument with the electron spin all the same). In the closed system where there's no interaction with the outside world the state is a superposition of the two with some probability. When you measure you're no longer dealing with a closed system, that is the person/instrument that measures influences the system, and since there's now determinism involved (i.e. the act of measurement) the state of the system collapses to one of the pure states - the cat is either dead or alive.
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@kshegunov
Hi,I understand the Schrödinger cat idea, I don't think it's wrong. I just want to know which way it did actually turn out when opened the box on his cat?
For the Bell/EPR thing, it's the implication of the "can be no hidden variables" that's intriguing, don't you think? What could quantum entanglement be? Are you more of a "Mathematical Physicist" rather than a "Philosophical Physicist"? ;-)
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@JNBarchan said in @kshegunov Quantum Mechanics:
I just want to know which way it did actually turn out when opened the box on his cat?
Well, either one way or the other. :)
The point is you can't tell until you open the box.For the Bell/EPR thing, it's the implication of the "can be no hidden variables" that's intriguing, don't you think?
I guess. I wouldn't trust theories that depend on hidden variables anyway, though. The whole point of science is to learn things, if we argue there exist things that can be neither measured, known or are otherwise hidden, we might as well go to church instead.
What could quantum entanglement be?
State coupling, which is pretty common. The typical (and quite known) problem, however, is not with entanglement itself. It's with the fact the QM is non-local, this mean everything (every process in QM) happens instantaneously in the whole of space, which is bizarre and hard to reconcile with.
Are you more of a "Mathematical Physicist" rather than a "Philosophical Physicist"?
Nuclear theory. Probably you could say I'm more of a mathematical physicist, I enjoy philosophy but am ultimately a practical man.
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It's with the fact the QM is non-local, this mean everything (every process in QM) happens instantaneously in the whole of space, which is bizarre and hard to reconcile with.
That's the bit I mean. And I assume a particle could in principle entangle with many others, and then any of them could influence it at the opposite side of The Universe. When they discover one day, I wonder what the "mechanism" will turn out to be....
Probably you could say I'm more of a mathematical physicist, I enjoy philosophy but am ultimately a practical man.
Yes I kind of guessed :) Being a layman, I am of course a purely philosophical amateur physicist!
Nuclear theory.
Ah ha! That's more like it! Right then: why haven't you figured practical nuclear fusion yet for the world's needs? You've had enough time now!