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NNTP-Posting-Date: Sun, 11 Aug 2024 00:35:49 +0000
Subject: Re: the notion of counter-intuitiveness in relativistic physics
Newsgroups: sci.physics.relativity
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From: Ross Finlayson <ross.a.finlayson@gmail.com>
Date: Sat, 10 Aug 2024 17:36:21 -0700
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On 08/10/2024 05:11 PM, gharnagel wrote:
> On Sat, 10 Aug 2024 23:35:40 +0000, Richard Hachel wrote:
>>
>> Le 10/08/2024 à 23:32, hitlong@yahoo.com (gharnagel) a écrit :
>> >
>> > On Sat, 10 Aug 2024 20:08:21 +0000, Richard Hachel wrote:
>> > >
>> > > As a relativistic reminder:
>> > > Vo=Vr/sqrt(1+Vr²/c²)
>> > > Vr=Vo/sqrt(1-Vo²/c²)
>> >
>> > u = (u' + v)/(1 + u'v/c^2) [A]
>> > Nope.  Only the relativistic velocity composition equation is
>> > necessary (Equation [A]), which comes directly from the LTEs:
>> >
>> > dx' = gamma(dx - vdt)
>> > dt' = gamma(dt - vdx/c^2)
>> >
>> > dx'/dt' = (dx/dt - v)/(1 - vdx/dt/c^2)
>>
>>  Absolutely, but...
>>
>>  And y? And z?
>
> Surely you know that y' = y and z' = z since the motion is solely
> along x.  I can only conclude, therefore, that you are obfuscating
> in the grand manner of Walnut-brain Wozzie.
>
>> But that's not what I'm talking about!
>> I'm talking about the notion of universal anisochrony, and the fact
>> that, very strangely, if we observe transverse motions,
>> we can never measure a speed greater than c.
>
> So?
>
>> But that in the longitudinal direction, and everything proves it, both
>> theory and experiment, we can observe things live.
>
> Not live.  Light transit time delayed.  Stop saying live.  You cheapen
> yourself by lying.
>
>> There is a geometry of space-time that is real, and lots of others
>> (including Minkowski's that are not).
>
> Is there a "real" geometry of spacetime?  Geometry is a human concept.
>
>> You give me the equation for adding longitudinal relativistic speeds as
>> if I didn't know it, are you kidding?
>
> You don't act like you know it.  Not deep down in your innards where it
> counts.
>
>> No, only do I know it, but I can give it to you in general observable
>> form, in general real form or in vector form.
>
> All I've seen is childish attempts to invent fantasies.
>
>> I'll remind you of it here, in observable form and in real form.
>>
>> <http://news2.nemoweb.net/jntp?h2AZmvcBZlMRhA47eIHkP9jDtT4@jntp/Data.Media:1>
>>
>>
>> <http://news2.nemoweb.net/jntp?h2AZmvcBZlMRhA47eIHkP9jDtT4@jntp/Data.Media:2>
>>
>>
>> R.H.
>
> Since one can always align motion with the x-axis when dealing with two
> bodies,
> there is no purpose in sines and cosines.  Doing so is just being a
> stuffed
> shirt.  And it's wrong anyway: "cosu.U" means what?  What is u.U?  Do
> you mean
> cos(u.U), which makes no sense. Cosines and sines are dimensionless. You
> need
> some formal education in correct mathematical expression.
>
> You always try to run before you can walk.

Heh, "all you've seen".

That's not scientific.