On Thursday, January 10, 2019 at 7:18:21 PM UTC-6, Brent wrote:
>
>
>
> On 1/10/2019 4:21 PM, John Clark wrote:
>
> *So even Feynman knew that there was no theoretical value for the FSC, 
>> alpha.*
>>
>
> No,  he knew very well there was a theory that could come up with a value 
> because his own Feynman Diagrams could do it. But what he didn't know and 
> what nobody knows is why his theory came up with that particular pure 
> number when he never specifically stuck that number into the rules on how 
> the diagrams should operate. 
>
>
> The fine structure constant is e^2/hbar*c.  Those three values are 
> measured independent of any Feynman diagrams of quantum field theory.  The 
> calculation using Feynman diagrams is of the anamolous magnetic moment.   A 
> correction to the value of g that depend on relativistic effects (hence the 
> occurence of c in the denominator).  The anamolous magnetic moment can be 
> measure experimentally and using Feynman's diagrams and the measured values 
> of e, hbar, and c a value can be calculated that includes the relativistic 
> effects of quantum field theory. That's why the agreement with measurement 
> is significant.
>
> Brent
>

Everyone seems to be overlooking charge renormalization.

LC 

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