Re: Why does the physicallity of Time matter?

From: Androcles (dummy_at_dummy.net)
Date: 12/23/04 

Date: Thu, 23 Dec 2004 12:45:57 GMT

"jahn" <susysewnshow@yahoo.com.au> wrote in message
news:32vmeqF3phq5uU1@individual.net...
>
> "Dirk Van de moortel" <dirkvandemoortel@ThankS-NO-SperM.hotmail.com>
> wrote in message
> news:oFwyd.7978$eX2.497715@phobos.telenet-ops.be...
>>
>> "Androcles" <dummy@dummy.net> wrote in message
>> news:zcqyd.35187$ef5.15128@fe1.news.blueyonder.co.uk...
>> >
>> > <chrisvillar@hotmail.com> wrote in message
>> > news:1103756494.789378.241920@c13g2000cwb.googlegroups.com...
>> > > Sal, you have hit the nail on the head. My question is:
>> > >
>> > > Why does A's clock run slower than B's and not vise versa?
>> >
>> > That should be "viCe versa".
>> > My History schoolteacher, an Oxford graduate, (he'd be 120
>> > today if alive) used to pronounce it "vickey versa".
>> >
>> > > Care to take a crack at giving a simple answer?
>> >
>> > The simple answer is the value of "c" which Einstein uses
>> > is infinity.
>> > First reaction to that statement is one of disbelief and
>> > incredulity,
>> > but Einstein actually does say so.
>> > "the velocity of light in our theory plays the part, physically, of
>> > an
>> > infinitely great velocity."
>> > Reference :
>> > http://www.fourmilab.ch/etexts/einstein/specrel/www/
>> >
>> > Second reaction is to claim his statement is some sort of analogy,
>> > that he doesn't actually mean infinity.
>> > The not quite so simple answer to that is that he makes use of it.
>> > If you and I leave point A at the same instant, me with velocity
>> > v and you with velocity c, you reach point B and return to meet me
>> > whilst I am still at A, then you have travelled with an infinite
>> > velocity.
>> > If your velocity is finite, you would meet me at A-vt instead of A.
>> > The Lorentz Transforms are derived from:
>> > ½[tau(0,0,0,t)+tau(0,0,0,t+x'/(c-v)+x'/(c+v))] =
>> > tau(x',0,0,t+x'/(c-v))
>> > and not
>> > ½[tau(0,0,0,t)+tau(0-vt,0,0,t+x'/(c-v)+x'/(c+v))] =
>> > tau(x',0,0,t+x'/(c-v))
>> > hence in SR, c = infinity.
>> > That is the simplest answer to your question, because
>> >
>> > tau = (t-vx/c^2) / sqrt ( 1- v^2/c^2)
>> > tau = (t-vx/infinity^2) / sqrt ( 1- v^2/infinity ^2)
>> > = (t-0) / sqrt ( 1- 0)
>> > = t / 1
>> > = t.
>> >
>> > If you attempt to use any finite value for c, you'll arrive at a
>> > paradoxical
>> > result. Mathematics does not lie, people do.
>>
>> Lies about vectors:
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/VectorLength.html
>> Lies about equations:
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/SetSolve2.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/Persuasive.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/AndroDistri.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/Pythagoras.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/ToothlessBite.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/Competent.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/UseTrans.html
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/Sheesh.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/SetSolve.html
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/DivZero.html
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/Think.html
>> Lies about square roots:
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/STILL.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/CanSpecify.html
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/Nearly.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/Quadratic.html
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/GrowUp.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/Tautology.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/Material.html
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/GIVEN.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/PythagoRescue.html
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/SqrtRev.html
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/NegSqrt.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/SqrtAnswers.html
>> Lies about exclusive ors:
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/Gibberish.html
>> Lies about partial differential equations:
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/PartialDiff.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/PartialDiff2.html
>>
>> http://users.pandora.be/vdmoortel/dirk/Physics/Fumbles/PartialDiff3.html
>>
>> Dirk Vdm
>>
>>
> YIKES!
> A CYBER TANTRUM!

LOL!
Androcles.

> Sue...
>
>