[ExI] physics

[William Flynn Wallace]

OK Spike, so a nothing in the middle of a something is a something,  Got it.

Anders:  In the standard general relativity view there is a patch of
spacetime there, with its own properties (curvature). And there could well
be electromagnetic fields (like light on its way through) or more exotic
quantum stuff. In quantum field theory "empty" space is a pretty complex
thing and the mystery is why it is not heavy and impenetrable.

(Empty should be heavy and impenetrable - got it.  I think.)

​I can tell you that I have tried to teach thousands of empty spaces
occupying  the craniums of students​ and can state without equivocation
that they ARE impenetrable in many cases.  Heavy thinking?  Nah.

I do love it when Anders and Clark explain things to me in terms I can
understand, though the organ pipe example is a bit fuzzy.

But it's like being a student, I suppose.  You think you understand
something and then the teacher explains it and you suddenly are totally
lost.

bill w


On Sun, Apr 24, 2016 at 7:55 PM, spike <spike66 at att.net> wrote:

>
>
> On 2016-04-24 17:43, William Flynn Wallace wrote:
>
>
>
> >…Say there is a cube of space (in 'outer' space) that has not one single
> atom of matter (violating entropy I suppose).  Does this mean that it is
> not in some sense 'space'?  Not until some matter is there?
>
> That there is no 'there' there?
>
>
>
>
>
> BillW, in that example there is a there there.  The matter outside that
> cube of space breaks its symmetry, making an inside and an outside.
> There’s your there there.
>
>
>
> >…Some say our universe is expanding.  Does this mean that some
> 'potential space' exists beyond any matter that will become 'space' when
> some matter gets there?
>
>
>
> This one is crazy hard to understand.  It isn’t that there is empty space
> and matter is going out into it.  Rather, the space itself is expanding.
> You can read a hundred different authors explain that concept and it is
> still mind-bending.  But you do need to get your head around it somehow, if
> you want to move on.
>
>
>
> spike
>
>
>
>
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>
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