> On 15 May 2019, at 03:07, Lawrence Crowell <[email protected]> 
> wrote:
> 
> On Tuesday, May 14, 2019 at 9:24:05 AM UTC-5, Bruno Marchal wrote:
> 
> > On 12 May 2019, at 09:08, Evgenii Rudnyi <[email protected] <javascript:>> 
> > wrote: 
> > 
> > ‘I believe there are 
> > 15,747,724,136,275,002,577,605,653,961,181,555,468,044,717,914,527,116,709,366,231,425,076,185,631,031,296
> >  protons in the universe, and the same number of electrons.’ 
> > 
> > Eddington, Arthur S. 1939. The Philosophy of Physical Science. Cambridge: 
> > Cambridge University Press. p. 170. The beginning of the Chapter XI, The 
> > Physical Universe. 
> 
> Lol. 
> 
> 
> The number is curiously not that different from the currently understood 
> number.
> 
> To be honest I think there is only one electron in the universe. All these 
> electrons we see are just the same electron weaving through space and time.


That is quite reasonable, but I am not sure an electron is a physical object, 
it is a locally observable invariant in some group theoretical transformation. 
The “electron” is a useful fiction, to send waves, or to make the atoms 
dialoguing into molecules and bigger strangely stable and persistent histories 
decorum.

I al still curious why that number. I don’t have that book by Eddington.

Bruno




> 
> LC
>  
> I guess this concerns the observable universe, which has grown a lot since 
> 1939. (Cf Hubble and “Hubble) 
> 
> Any idea of why that particular number? Beyond the apparent joke? 
> 
> Bruno 
> 
> 
> 
> 
> > 
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> >  
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