Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > sci.physics.relativity > #433366

Re: Failures of the Galilean transformation

From Thomas Heger <ttt_heg@web.de>
Newsgroups sci.physics.relativity
Subject Re: Failures of the Galilean transformation
Date 2017-09-22 20:27 +0200
Message-ID <f2l314F2lbU1@mid.individual.net> (permalink)
References (3 earlier) <10921718.O9o76ZdvQC@PointedEars.de> <1b97f699-d4c7-41fc-9041-3fdec761811b@googlegroups.com> <5311903.lOV4Wx5bFT@PointedEars.de> <f2hs19F7eolU1@mid.individual.net> <89f48ca9-98d8-4280-8a10-d279f2c660c5@googlegroups.com>

Show all headers | View raw


Am 21.09.2017 um 15:29 schrieb mlwozniak@wp.pl:
> W dniu czwartek, 21 września 2017 15:10:04 UTC+2 użytkownik Thomas Heger napisał:
>
>> This is so, because the spaceship cannot define an absolute zero point
>> in space, in respect which it has a certain velocity.
>>
>> IOW: speed is 'relative'.
>>
>> The spaceship crew could say 'well, we don't know how fast we are. But
>> at least we are at rest in respect to ourselves'.
>
> It's incredibly wise and the ship's navigator will
> obviously be delighted with incredibly wise guru
> providing him such incredibly helpful information
>
>> This does in fact make some sense and that is actually what we usually do.
>
> Your driving license should be immediately revoked, if
> you ever managed to obtain any with such approach.
>

I did not say, that pace on a rood is 'relative'.

But actually towards which point of reference a car runs 'absolute'?

Certainly you regard the road as at rest and the car as moving. This is 
actually what we usually do.

But we're not talking about cars on streets, but about theoretical 
physics and the validity of SRT.

Since SRT uses a term 'v' (for velocity) in its equations, it should be 
legitimate to ask, in respect to which reference point this v is measured.

This is especially legitimate, since SRT assumes the validity of the 
principle of equivalence. That means, that you cannot distinguish 
unaccelerated motion from being at rest.

So what does this term 'v' (of SRT) mean in a physical sense?

Certainly not meant is the speed of a car on some sort of road.

SRT uses in fact a schizophrenic concept of relative motion and an 
absolute space (plus absolute time).

But the real deal would be, that space is relative to an arbitrary 
observer, equipped with local time only.


TH

Back to sci.physics.relativity | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread


Thread

Failures of the Galilean transformation (was: The Song of Lt. Cdr. Data) Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-20 17:23 +0200
  Failures of the Galilean transformation (was: The Song of Lt. Cdr. Data) "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2017-09-20 08:36 -0700
  Re: Failures of the Galilean transformation Thomas Heger <ttt_heg@web.de> - 2017-09-21 15:10 +0200
    Re: Failures of the Galilean transformation mlwozniak@wp.pl - 2017-09-21 06:29 -0700
      Re: Failures of the Galilean transformation Thomas Heger <ttt_heg@web.de> - 2017-09-22 20:27 +0200
        Re: Failures of the Galilean transformation mlwozniak@wp.pl - 2017-09-22 12:13 -0700
          Re: Failures of the Galilean transformation Thomas Heger <ttt_heg@web.de> - 2017-09-22 21:36 +0200
            Re: Failures of the Galilean transformation Kos Etrakis <uar@ksskkwi.ck> - 2017-09-22 20:09 +0000
              Re: Failures of the Galilean transformation Thomas Heger <ttt_heg@web.de> - 2017-09-23 12:10 +0200
            Re: Failures of the Galilean transformation mlwozniak@wp.pl - 2017-09-22 13:30 -0700
              Re: Failures of the Galilean transformation Thomas Heger <ttt_heg@web.de> - 2017-09-23 12:56 +0200
                Re: Failures of the Galilean transformation mlwozniak@wp.pl - 2017-09-23 05:09 -0700
                Re: Failures of the Galilean transformation Thomas Heger <ttt_heg@web.de> - 2017-09-24 21:31 +0200
                Re: Failures of the Galilean transformation Poutnik <poutnik@privacy.net> - 2017-09-24 21:43 +0200
                Re: Failures of the Galilean transformation Thomas Heger <ttt_heg@web.de> - 2017-09-25 21:26 +0200
                Re: Failures of the Galilean transformation Poutnik <poutnik@privacy.net> - 2017-09-25 22:00 +0200
                Re: Failures of the Galilean transformation Thomas Heger <ttt_heg@web.de> - 2017-09-26 21:45 +0200
                Re: Failures of the Galilean transformation Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-29 01:52 +0200
                Re: Failures of the Galilean transformation Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2017-09-27 09:50 +0200
                Re: Failures of the Galilean transformation mlwozniak@wp.pl - 2017-09-24 22:57 -0700
                Re: Failures of the Galilean transformation Thomas Heger <ttt_heg@web.de> - 2017-09-25 10:23 +0200
                Re: Failures of the Galilean transformation mlwozniak@wp.pl - 2017-09-25 02:07 -0700
                Re: Failures of the Galilean transformation Thomas Heger <ttt_heg@web.de> - 2017-09-25 21:14 +0200
                Re: Failures of the Galilean transformation mlwozniak@wp.pl - 2017-09-25 13:10 -0700
                Re: Failures of the Galilean transformation Thomas Heger <ttt_heg@web.de> - 2017-09-26 22:12 +0200
                Re: Failures of the Galilean transformation mlwozniak@wp.pl - 2017-09-26 22:41 -0700
                Re: Failures of the Galilean transformation Thomas Heger <ttt_heg@web.de> - 2017-09-28 21:09 +0200
                Re: Failures of the Galilean transformation mlwozniak@wp.pl - 2017-09-28 13:14 -0700
                Re: Failures of the Galilean transformation Thomas Heger <ttt_heg@web.de> - 2017-09-29 14:10 +0200
                Re: Failures of the Galilean transformation mlwozniak@wp.pl - 2017-09-29 06:09 -0700
                Re: Failures of the Galilean transformation Thomas Heger <ttt_heg@web.de> - 2017-09-30 16:39 +0200
                Re: Failures of the Galilean transformation mlwozniak@wp.pl - 2017-09-30 08:12 -0700

csiph-web