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Most used phrases/questions/replies on BC

roger

By roger,
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Frank Blank Grand Master

Frank Blank

Posted
Posted

Thus in contemporary quantum theory it seems that the world must be divided into a wavy "quantum system," and a remainder which is in some sense "classical." The division is made one way or another, in a particular application, according to the degree of accuracy and completeness aimed at. For me it is the indispensability, and above all the shiftiness, of such a division that is the big surprise of quantum mechanics. It introduces an essential ambiguity into fundamental physical theory, if only at a level of accuracy and completeness beyond any required in practice. It is the toleration of such an ambiguity, not merely provisionally but permanently, and at the most fundamental level, that is the real break with the classical ideal. It is this rather than the failure of any particular concept such as "particle" or "determinism." In the remainder of this essay I will outline a number of world views with physicists have entertained in trying to digest this situation.

 

Drives me effin' mental that one.

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tauzero Grand Master

tauzero

Posted
Posted
4 hours ago, SumOne said:

 

True, it is said a lot, but that's basically because that is the main reason to have/not have a 5, so I think is perfectly reasonable reason to sell a 5 (a bit unnecessary to mention when selling though I suppose). 

 

It's the main reason that people who have bought a 5-string and not found the main reason for having a 5-string have for selling it.

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rwillett Grand Master

rwillett

Posted
Posted
2 hours ago, Frank Blank said:

Thus in contemporary quantum theory it seems that the world must be divided into a wavy "quantum system," and a remainder which is in some sense "classical." The division is made one way or another, in a particular application, according to the degree of accuracy and completeness aimed at. For me it is the indispensability, and above all the shiftiness, of such a division that is the big surprise of quantum mechanics. It introduces an essential ambiguity into fundamental physical theory, if only at a level of accuracy and completeness beyond any required in practice. It is the toleration of such an ambiguity, not merely provisionally but permanently, and at the most fundamental level, that is the real break with the classical ideal. It is this rather than the failure of any particular concept such as "particle" or "determinism." In the remainder of this essay I will outline a number of world views with physicists have entertained in trying to digest this situation.

 

Drives me effin' mental that one.

 

I can see your point here, you have to think in both a classic, almost Newtonian way of thinking and then at the same time switch your brain almost through 180 degrees into Niels Bohr mode, depending on exactly how you wish to examine the world.

 

I have the same issue every time I buy a guitar, I think classically, "Can I afford it?" and then I shift into the Quantum mode of uncertainty, "Will my other half find out about it?". We can also consider Shrodinger here, his classic "Is the cat in the box dead or alive" experiment, can be rewritten to "If my other half doesn't know about the new guitar, does it even exist for her?" or more simply "If she finds out, will she kill me?", basically I am alive and dead at the same time fulfilling Shrodingers axioms.

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Frank Blank Grand Master

Frank Blank

Posted
Posted
3 minutes ago, rwillett said:

I can see your point here, you have to think in both a classic, almost at the same time fulfilling Shrodingers axioms.


I almost saw Shrodinger's point whilst fulfilling his axioms but thankfully I was arrested before it became a classical paradox.

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lozkerr Veteran

lozkerr

Posted
Posted
2 hours ago, tauzero said:

 

It's the main reason that people who have bought a 5-string and not found the main reason for having a 5-string have for selling it.

Nailed it. There are two or three songs in my two bands' combined repertoire that actually need notes below bottom E, but I could never go back to a four-string now - I'd have to re-learn the fingering for well over a hundred songs.

ahpook Grand Master

ahpook

Posted
Posted
On 23/11/2023 at 19:54, Frank Blank said:

Thus in contemporary quantum theory it seems that the world must be divided into a wavy "quantum system," and a remainder which is in some sense "classical." The division is made one way or another, in a particular application, according to the degree of accuracy and completeness aimed at. For me it is the indispensability, and above all the shiftiness, of such a division that is the big surprise of quantum mechanics. It introduces an essential ambiguity into fundamental physical theory, if only at a level of accuracy and completeness beyond any required in practice. It is the toleration of such an ambiguity, not merely provisionally but permanently, and at the most fundamental level, that is the real break with the classical ideal. It is this rather than the failure of any particular concept such as "particle" or "determinism." In the remainder of this essay I will outline a number of world views with physicists have entertained in trying to digest this situation.

 

Drives me effin' mental that one.

 

I love it....it's like opening the Haynes Manual for the Universe and finding it was written by Lewis Carrol :)

Guest

Guest

Posted
Posted
11 hours ago, EssentialTension said:

Even smugger is the very rare IATL.

 

10 hours ago, upside downer said:

Institute for Advanced Teaching and Learning? International Asbestos Testing Laboratories? Eh?

 

I also thought about that. It could also mean: I Am The Law ;)

Daz39 Grand Master

Daz39

Posted
Posted

Had to laugh - that ridonculously expensive Alembic on Reverb has one comment about it playing like butter... 

I now know why supermarket Lurpak needed to be kept in plastic boxes with security tags on earlier in the year!

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