Whilst
it is fun to write about our national political failures, both human
and in actions, it doesn’t stop the mind thinking about everything
around itself. In particular the space we all live in. Like for
instance, expanding space. The question about how our universe
started. Big Bang? Big Whimper? Or no bang or whimper at all?
Obviously I am not a scientist, although it doesn’t stop me
thinking about the subject. For what I am seeing and hearing,
scientists also don’t really know much about it either. The reality
on the ground is pretty simple. Everything falls down. In other words
‘gravity’. A force not to be taken lightly either. The next thing
I am thinking, our universe is there, we can see the stars in it. Our
enormous telescopes are showing it in great detail. Then the idea of
the ‘expanding’ universe. But is that really true? Of course,
there is the ‘red-shift’ but does that actually indicate the
universe is expanding? Or that star systems are just moving about. As
everything seems to be in motion the question would arise as to where
the initial energy would have come from. If there was a Big Bang or
perhaps just a gradual expansion of matter into a vacuum then that
energy will eventually run out of steam. To be followed by a Big
Collapse? Or a dissipation of matter aimlessly floating until
captured by something else. There is the idea of multiverses.
It
is difficult to grasp time. We know clocks tick away second by
second. But what is ‘time’ exactly? If, as some scientists think,
there is ‘nothing’, then there would be no ‘time’. Time
belongs to ‘something’. In other words time begins when something
happens. So time began when one way or another our universe began.
For us humans time began when we became aware of our existence, day
and night. Think about it, how we measure it, and what for. Thus our
universe has a ‘time frame’. One frame we will never really fully
experience as it’s virtually endless compared
to our existence and even our solar system. On
one very interesting website – ‘https://scitechdaily.com’,
a rather interesting idea is shown. Simulation of quantum vacuum
fluctuations in quantum dynamics. An image showing the
fluctuations of matter to energy and vice versa. The spacetime vacuum
state is seething with particles constantly being created and
destroyed, apparently “out of nothing”. But
it also shows that matter disappears in ‘one place’ and appears
in another. Also it postulates the idea of a cycle. From a hot dense
state to a cold dense state. When the hot state grows bigger the cold
state shrinks. Nice but when then will it reverse? These ideas are
metaphysics but nevertheless appeal. They do to me! An eminent
professor Roger
Penrose said this: he showed how the cold dense state and the hot
dense state could be related by such rescaling so that they match
with respect to the shapes of their spacetimes – although not to
their sizes’. Difficult to grasp when talking about size. How can
two things be ‘identical’ and have different sizes. I suppose it
would depend on their density. Interesting, the writer of the article
also said: ‘It may help to understand the hot dense state as
produced from the cold empty state in some non-causal way. Perhaps we
should say that the hot dense state emerges
from,
or is grounded
in,
or realized
by
the cold, empty state’. If you now have a headache, don’t worry.
I have one but also am excited by these ideas.
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