Re: Evil Twin Paradox


"Alen" <alen1@xxxxxxxxxxxxxxx> wrote in message
news:1186461484.047250.40000@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Aug 6, 11:52 pm, David <dsepp...@xxxxxxxxxxxxx> wrote:

If the steel wall were not there, either twin could shoot the other
twin as they passed each other. Or if the steel wall prior to the gap
was removed, then the evil twin could shoot the passing good twin. Or
if the steel wall following the gap was removed, the evil twin could
hit the good twin. But if both sections of the steel wall are
present, then using this length contraction formula, the evil twin's
100 millimeter projectile cannot pass through the proton sized gap.
That makes no sense to me.

Thanks ahead for your physics insights (and also for the usual barrage
of comments about what an idiot I am).
David Seppala

They tear you apart in an atmosphere of repulsive,
competitive, complacency, in supreme confidence that
the standard explanation couldn't possibly be wrong in
the slightest respect. But you, and others like you, can
never be satisfied with their explanations. Why? Because
the mind at least intuitively senses when an explanation
that looks plausible is not really correct, however difficult
it might be to identify what is wrong. Therefore SR is, and
will continue to be, plagued by all sorts of paradoxes that
can never die, no matter how often the spacetime rotations
concept is used to answer them.

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.

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

I say, let a whole series of twins,
at different locations, accelerate identically together. Now
where is the fulcrum of rotation of the wall?

Alen





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Relevant Pages

  • Re: Evil Twin Paradox
    ... An evil twin and a good twin are intially in the same reference frame ... extremely long steel wall that extends along the x-axis. ... The length of this gap is L=10 ...
    (sci.physics.relativity)
  • Re: Evil Twin Paradox
    ... Evil Twin Paradox ... An evil twin and a good twin are intially in the same reference frame ... extremely long steel wall that extends along the x-axis. ... The length of this gap is L=10 ...
    (sci.physics.relativity)
  • Re: Evil Twin Paradox
    ... An evil twin and a good twin are intially in the same reference frame ... extremely long steel wall that extends along the x-axis. ... The length of this gap is L=10 ...
    (sci.physics.relativity)
  • Evil Twin Paradox
    ... Evil Twin Paradox ... An evil twin and a good twin are intially in the same reference frame ... extremely long steel wall that extends along the x-axis. ... The length of this gap is L=10 ...
    (sci.physics.relativity)
  • Re: Evil Twin Paradox
    ... An evil twin and a good twin are intially in the same reference frame ... extremely long steel wall that extends along the x-axis. ... The length of this gap is L=10 ...
    (sci.physics.relativity)