home bbs files messages ]

Forums before death by AOL, social media and spammers... "We can't have nice things"

   sci.physics.research      Current physics research. (Moderated)      17,516 messages   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]

   Message 16,779 of 17,516   
   Jos Bergervoet to Douglas Eagleson   
   Re: confirmation of undisputed results   
   18 Jan 21 21:34:32   
   
   From: jos.bergervoet@xs4all.nl   
      
   On 21/01/18 7:16 PM, Douglas Eagleson wrote:   
   > On Monday, January 4, 2021 at 4:49:11 AM UTC-5, Phillip Helbig (undress to   
   reply) wrote:   
   >> Not much effort is put into confirming or refuting undisputed results or   
   >> expectations, but occasionally it does happen. For example, according   
   >> to theory muons are supposed to be essentially just like electrons but   
   >> heavier, but there seems to be experimental evidence that that is not   
   >> the case, presumably because someone decided to look for it.   
   >>   
   >> What about even more-basic stuff? For example, over what range (say,   
   >> multiple or fraction of the peak wavelength) has the Planck black-body   
   >> radiation law been experimentally verified? Or that radioactive decay   
   >> really follows an exponential law? Or that the various forms (weak,   
   >   
   > given a single neutron creating a single radioisotope atom   
   > the question becomes "can it never decay?" Meaning does   
   > decay have a probability distribution.   
      
   "Probability" is only required if you insist upon a "collapse"   
   of the state in QM. But that is now an almost untenable view.   
   If you just accept that the universe is a superposition of   
   different branches, as QM literally describes it, then there   
   is no randomness and "probability" will play no fundamental   
   role. You just will have the amplitude of one branch decaying   
   exponentially (and never becoming zero).   
      
   NB: of course probability would still be a useful concept for   
   describing large collections of objects or events, just like   
   it was in classical physics, but no fundamental need for it   
   would exist.   
      
   >   ...   
   > The natural existence of a characteristic decay rate implies   
   > an atom set lifetime. Now a convergent?   
      
   I don't see how it necessarily "implies" that. It simply states   
   that the amplitude of the state with an excited atom gradually   
   decreases in the total superposition of the state of the   
   universe, while the that of the state with the decayed atom   
   increases.   
      
   > But, at some time the last atom.   
      
   Only if you believe in a "collapse"! Otherwise no such time   
   exists.   
      
   > Given a set of atoms and a 100percent counting efficiency   
   > will the number of counts ever equal the number of   
   > atoms.   
      
   In those branches of the total superposition describing the   
   universe where all atoms have decayed, there it equals that   
   number! Already at the beginning of the counting (but at the   
   beginning the amplitude of that component in the superposition   
   is very low.)   
      
   > basically needing mathematical solution.  How to solve   
   > this dilemma?   
      
   Easy: forget the Copenhagen "interpretation" (which isn't   
   an interpretation, but a pure *rejection* of the gradual,   
   unitary time-evolution described by the equations of QM.)   
      
   >   ...   I am still open on this question but   
   > submit it as a version of the halving distances function   
   > dilemma. "If you halve the distance to an object forever   
   > do you ever finally reach the object?"   
      
   That answer is known: you do reach it if your halving of the   
   distance becomes faster at a sufficient rate every time you   
   do it. And otherwise you don't reach it. Just sum the times..   
      
   > Or attack it by doing axis or time transform.   
      
   Attacking the description of exponential decay is indeed an   
   interesting field of study, especially the cases where the   
   time-span is billions of years. How can QM describe such a   
   slow process, given all the influence from the environment..   
   Why isn't the transition stimulated by external radiation,   
   etc.? But those are just questions within the gradual change   
   mechanism of the Hilbert space state.   
      
   See the references given below Matt O'Dowd's latest video:   
        
      
   --   
   Jos   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

[   << oldest   |   < older   |   list   |   newer >   |   newest >>   ]


(c) 1994,  bbs@darkrealms.ca