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From: Julio Di Egidio <julio@diegidio.name>
Newsgroups: sci.physics
Subject: Re: What is "uncertain" in quantum physics?
Date: Mon, 19 May 2025 11:14:03 +0200
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On 19/05/2025 11:07, Julio Di Egidio wrote:
> On 19/05/2025 03:10, x wrote:
>> On 5/18/25 10:28, Julio Di Egidio wrote:
>>> Why shouldn't we think of the Uncertainty Principle as just a statement
>>> about the limits of observation, rather than about something objective,
>>> especially as in causing some non-zero vacuum energy?
>>>
>>> Is there some experiment that settles "uncertainty" as something "really
>>> there"?  In particular, I am not sure if the expansion of the Universe
>>> is such evidence, or rather a consequence of the theory.
>>>
>>> Thanks for any insight.
>>
>> Interesting.  A statement or question actually
>> about physics.
> 
> LOL, indeed.
> 
>> If something is 'quantized' in quantum mechanics
>> it is actually there [and] not there.
>>
>> Take an electron.  It actually has a specific
>> rest mass or charge.  It does not have an infinite
>> number of fine degrees of mass or charge.
> 
> But quantisation has nothing to do with uncertainty.
> 
> Unless you are thinking of quantising space-time...?

I.e. space-time dimensions: so no, at least not until
further notice, as those remain in a first instance
descriptions of observation, the "frames of reference".

-Julio