Does somebody know what Vacuum is ?

Does somebody know what Vacuum is ?

Posted in the Physics Forum


Tel Aviv, Israel

#2 May 16, 2012
mathematical idealization

when we mathematical model the scenario of an object
moving we try to model things as simply as possible,
so we consider a scenario where there is no impediment
to its motion that would be a perfect vacuum.
But in practice there is less that perfect.
So the Platonic realm of idealization gives way
to physical reality by concessions.
/ roger /
But in practice there is less that perfect.
/ roger /

But in practice there are many claims that perfect
vacuum energy has a physical relevance:
in Vacuum polarization, in Casimir effect,
in the cosmological constant, Lamb shift,
electron magnetic momentum anomaly.
Is perfect vacuum only a ‘mathematical idealization’?


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