Casting, altitude ,& Vacuum Pumps

John–G’day; Loved you explanation of the vacuum and sea level
pressure. I really understand how barometric pressure works in a
gauge.

Now please tell us all, how the “big bang” came about. Physicist
tell us that before the big bang there was nothing—a
vacuum—so what cause the explosion?? Waiting with great
anticipation for your answer!!! Dolores New Jersey

Now please tell us all, how the "big bang" came about. Physicist
tell us that before the big bang there was nothing---a
vacuum

In the words of a Good Kiwi Joker - you’ll be bloody lucky,
mate.

The general consensus of opinion is that anything prior to the
Big Bang is unknowable.

Better ask the Bloke up there - you know; “In the beginning
was the Word,” And I doubt that She’s about to let on.
But be of good cheer: life is real, life is earnest and every
footstep nears the grave. Cheers, mate,

        /\
       / /
      / /      Johnb@ts.co.nz
     / /__|\
    (_______)  In sunny temperate Mapua NZ -

Autumn’s here…

  Now please tell us all, how the "big bang" came about.
Physicist tell us that before the big bang there was
nothing---a vacuum---so what cause the explosion?? Waiting with
great anticipation for your answer!!! Dolores New Jersey 

Kicker to this is that time itself, being one of the intrinsic
dimensions of this universe which started in the big bang, also
itself originates with the big bang. There isn’t really a
definable “before”, at least not relative to our universe.
Emphasis on “definable”… And you assume there must be a
cause and effect relationship here to “start” the thing. There’s
no evidence that any such “cause” is needed. Many events on the
atomic or subatomic scale occur completely randomly, without
cause… Some of this stuff Gets REALLY mind boggling if you try
to comprehend it in terms of our scale of existance and Euclidian
geometry based view of reality. And to make it worse, a whole
bunch of varying explanations about the actual nature of the big
bang itself conflict with each other significantly enough that
it’s pointless, still, to try and worry about where it actually
came from, or even if there can be such a thing as the “from”
from which the big bang came. Was that sentance sufficiently
convoluted as to be totally confusing? If so, then perhaps it
comes close to your desired explanation. In truth, I suspect
that actual verbal clear explanations of the big bang cannot
really exist. Explanations can exist mostly just in the math,
which may be, in it’s own sense, exceedingly beautiful if you’ve
the mathematical fluency to understand it… At least that’s my
feeling. Maybe I’m wrong… Your turn, John B…

Peter Rowe

Thank you Peter and John for your response to the "big bang"
question. I love the wonderment of life and reading hypotheses of
its origins. What a great gift life is! How fortunate we are,in
this time and space, to have the opportunity to see so much more
of the universe and its wonders and mystery. Working with a
beautiful gem and understanding what it took to put that
beautiful thing in my hands, and my desire to put it in a
setting that I pray will enhance its rare and beautiful quality
and not cheapen it or demean it, is my string to that powerful
mystery. I think I am rhapsodizing sophomorically, but I do love
what I do in my studio. Dolores New Jersey