Re: Evil Twin Paradox

On Aug 7, 5:41 pm, "harry" <harald.vanlintelButNotT...@xxxxxxx> wrote:
"Alen" <al...@xxxxxxxxxxxxxxx> wrote in message

news:1186461484.047250.40000@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx


Instead of giving my usual argument, I will point to a problem
with their explanation that they never deal with. They say
that the wall rotates in spacetime,

That's mathematical language. I suspect that a majority of physicists
doesn't believe in a geometrical kind of ether in which space is literally
mingled with time.

Then what do they believe? Do you agree with me
that Minkowski spacetime is not an actual, physical reality?

so that it is almost at
'right angles' to the moving twin, so that the gap looks to
be almost completely closed, and thus the moving twin has
no chance to fire through such a narrow gap. But a question
is, what is the fulcrum of such a rotation, and how is it
specified or identified? If anyone says it is specified by the
twin who accelerates,

No, it's specified by the set of inertial frames.

Harald

If spacetime rotations are not supposed to be
physically real, then arbitrary fulcra of rotations
can be used as desired. If, however, they are supposed
to be real, how does an inertial frame establish the
location of the fulcrum of its spacetime rotation relative
to another inertial frame, if it is not specified by an
object that accelerates into it?

Alen

.

Relevant Pages

  • Re: Evil Twin Paradox
    ... I suspect that a majority of physicists ... that Minkowski spacetime is not an actual, ... the rotation is determined by the Lorentz factor (and thus by the ... how does an inertial frame establish the ...
    (sci.physics.relativity)
  • Re: Time dilation mirrors perpendicular to motion
    ... Does anyone know of a clear exlanation/derivation of time dilation for this ... In general relativity, it is assumed that spacetime is curved ... which most physicists would consider bizarre or unsettling. ...
    (sci.physics.relativity)
  • Re: Time dilation mirrors perpendicular to motion
    ... Does anyone know of a clear exlanation/derivation of time dilation for this ... In general relativity, it is assumed that spacetime is curved ... which most physicists would consider bizarre or unsettling. ...
    (sci.physics.relativity)
  • Re: Time dilation mirrors perpendicular to motion
    ... Does anyone know of a clear exlanation/derivation of time dilation for this ... In general relativity, it is assumed that spacetime is curved ... which most physicists would consider bizarre or unsettling. ...
    (sci.physics.relativity)
  • Re: In search of the perfect Disassembler
    ... Beth wrote: ... I'd bet the unify gravity and spacetime before they unify the ... > universe to become ten times more complicated than it was previously... ... > You'll note that once all the physicists agreed that light was a constant, ...
    (alt.lang.asm)