Do you have an explanation for why reality time computes fewer moments
for someone accelerating than someone at rest?
Jason
On Jan 16, 2014, at 9:09 AM, "Edgar L. Owen" <edgaro...@att.net> wrote:
Brent,
Whoa, back up a little. This is the argument that proves every
INDIVIDUAL observer has his OWN present moment time. You are trying
to extend it to a cosmic universal time which this argument doesn't
address. That's the second argument you referenced.
This argument demonstrates that for every INDIVIDUAL observer SR
requires that since he continually moves at c through spactime, that
he MUST be at one and only one point in time (and of course in space
as well), and thus there is a privileged present moment in which
every observer exists, and since he is continually moving through
time at c he will experience an arrow of time in the direction of
his movement.
Once that is agreed we can go on to the 2nd argument to prove that
these are universal across all observers....
So can we agree on that?
Edgar
On Wednesday, January 15, 2014 9:19:24 PM UTC-5, Brent wrote:
On 1/15/2014 4:38 PM, Edgar L. Owen wrote:
Brent,
Both DO follow if you understand the argument. Why do you think they
don't follow?
Well the first one is true, if you take time to mean a global
coordinate time. But then it's just saying every event can be
labelled with a time coordinate. All that takes is that the label
be monotonic and continuous along each world line. It' saying that
'everything can get a time label'. But it doesn't say anything
about how the label on one worldline relates to labels on a
different world line.
The SR requirement that the speed of light be the same in all
inertial frames then implies that the labeling along one line
*cannot* be uniquely extended to other lines, but must vary
according to their relative velocity.
Brent
Edgar
On Wednesday, January 15, 2014 7:27:07 PM UTC-5, Brent wrote:
On 1/15/2014 4:02 PM, Edgar L. Owen wrote:
Brent,
Bravo! Someone actually registered some of my arguments, though I
would state them slightly differently.
The argument in question, that everyone except Brent seems to have
missed, is simple.
SR requires that everything moves at the speed of light through
spacetime. This is NOT just "a useful myth", it's a very important
fundamental principle of reality (I call it the STc Principle).
It's a commonplace in relativity texts.
This is true of all motions in all frames. It's a universal absolute
principle.
Now the fact that everything continually moves at the speed of light
through spacetime absolutely requires that everything actually moves
and continually moves through just TIME at the speed of light in one
direction in their own frame. This movement requires there to be an
arrow of time,
Not exactly. It requires that there be a time-axis, but it doesn't
say anything about which way the arrow points. It only
implies that bodies cannot move spacelike (because when
they get up to c they've used all their speed to move through space
and none to move through time).
and this principle is the source of the arrow of time and gives the
arrow of time a firm physical basis.
Second, because everything is always moving through time at the
speed of light everything MUST be at one and only one location in
time.
That doesn't follow.
That present location in time is the present moment, it's a unique
privileged moment in time.
That doesn't follow.
Brent
(This argument demonstrates only there must be a present moment for
every observer. The other argument Brent references is necessary to
demonstrate that present moment is universal and common to all
observers.) Bravo again Brent, for
...
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