Notion of Absolute Clock Synchronization in SR
in [Relativity]
|
From: Androcles on 11 May 2010 16:50 <valls(a)icmf.inf.cu> wrote in message news:44448961-61b6-4f02-8424-a16374f4d311(a)k19g2000yqm.googlegroups.com... What part of the story about the launching of the first GPS satellite you don�t understand? =========================================== I don't understand fairy tales, I'm a scientist and mathematician.
From: Androcles on 11 May 2010 17:58 <valls(a)icmf.inf.cu> wrote in message news:6c47ffb3-aeff-47b2-afe7-1e662ecb72de(a)q30g2000yqd.googlegroups.com... On 11 mayo, 16:26, "Androcles" <Professor(a)RationalPhysics_A.edu> wrote: > <va...(a)icmf.inf.cu> wrote in message > news:31207b3d-0f2c-4afa-a732-387023f1e052(a)t17g2000yqg.googlegroups.com... > On 11 mayo, 15:41, "Androcles" <Professor(a)RationalPhysics_A.edu> > wrote: > > <va...(a)icmf.inf.cu> wrote in message > > > Measured with respect to the centre of mass reference frame that > > > corresponds to all the bodies involved, a system of coordinates in > > > which the equations of Newtonian mechanics hold good. > > > > ============================================= > > > What's the origin of time then? Since when did time have a coordinate? > > > Time is not considered a coordinate by 1905 Einstein. > > ========================================= > > � 3. Theory of the Transformation of Co-ordinates and Times from a > > Stationary System to another System in Uniform Motion of Translation > > Relatively to the Former > > > To any system of values x, y, z, t, which completely defines the place > > and > > time of an event in the stationary system, there belongs a system of > > values > > xi, eta, zeta, tau determining that event relatively to the system k, > > and > > our task is now to find the system of equations connecting these > > quantities. > > > Which one isn't a coordinate in the moving system: xi, eta, zeta or tau > > ? > > Tau is not a coordinate here for 1905 Einstein. > ================================================= > Why not? What's different about it? That tau represents time, a completely different from space concept ================================================= I'm not talking about your concepts, I'm talking about mathematical coordinates. Which one isn't a coordinate in the moving system: xi, eta, zeta or tau, you stupid babbling cretin ? Everything is vague to a degree you do not realize till you have tried to make it precise. -- Bertrand Russell
From: valls on 11 May 2010 18:33 On 11 mayo, 16:58, "Androcles" <Professor(a)RationalPhysics_A.edu> wrote: > <va...(a)icmf.inf.cu> wrote in message > > news:6c47ffb3-aeff-47b2-afe7-1e662ecb72de(a)q30g2000yqd.googlegroups.com... > On 11 mayo, 16:26, "Androcles" <Professor(a)RationalPhysics_A.edu> > wrote: > > > > > <va...(a)icmf.inf.cu> wrote in message > >news:31207b3d-0f2c-4afa-a732-387023f1e052(a)t17g2000yqg.googlegroups.com.... > > On 11 mayo, 15:41, "Androcles" <Professor(a)RationalPhysics_A.edu> > > wrote: > > > <va...(a)icmf.inf.cu> wrote in message > > > > Measured with respect to the centre of mass reference frame that > > > > corresponds to all the bodies involved, a system of coordinates in > > > > which the equations of Newtonian mechanics hold good. > > > > > ============================================= > > > > What's the origin of time then? Since when did time have a coordinate? > > > > Time is not considered a coordinate by 1905 Einstein. > > > ========================================= > > > § 3. Theory of the Transformation of Co-ordinates and Times from a > > > Stationary System to another System in Uniform Motion of Translation > > > Relatively to the Former > > > > To any system of values x, y, z, t, which completely defines the place > > > and > > > time of an event in the stationary system, there belongs a system of > > > values > > > xi, eta, zeta, tau determining that event relatively to the system k, > > > and > > > our task is now to find the system of equations connecting these > > > quantities. > > > > Which one isn't a coordinate in the moving system: xi, eta, zeta or tau > > > ? > > > Tau is not a coordinate here for 1905 Einstein. > > ================================================= > > Why not? What's different about it? > > That tau represents time, a completely different from space concept > ================================================= > I'm not talking about your concepts, I'm talking about mathematical > coordinates. > Which one isn't a coordinate in the moving system: xi, eta, zeta or tau, > you stupid babbling cretin ? (I realize now that you are making multiple answers, confusing me in the management of the thread. I will continue only this branch of the thread to make easy our communication). You can't change what 1905 Einstein writes, and much less its meaning. Whatever you mean now for "mathematical coordinates" is completely out of the historic context. Tau is not a coordinate in 1905 Einstein text. I am not the one introducing new concepts of space and time. We must respect the concepts in common use in 1905. Space and time were completely different concepts in 1905.In Newtons Principia you have also space completely separated from time. They remain separated in 1905 Einstein where * co-ordinate * refers only to space, not to time. > Everything is vague to a degree you do not realize till you have tried to > make it precise. -- Bertrand Russell RVHG (Rafael Valls Hidalgo-Hato)
From: harald on 13 May 2010 05:33 On May 12, 10:06 pm, va...(a)icmf.inf.cu wrote: [..] > > Tau is not a coordinate for 1905 Einstein. > > ================================================== > > REPEAT:> > Why not? What's different about it? > > > > That tau represents time, a completely different from space concept > > > ================================================= > > > I'm not talking about your concepts, I'm talking about mathematical > > coordinates. > > > Which one isn't a coordinate in the moving system: xi, eta, zeta or > > tau, you STOOOPID BABBLING FUCKWITTED CRETIN ? > > 1905 Einstein uses Cartesian coordinates and Euclidean geometry. Both > of them dont support time as a coordinate, a concept developed by > Minkovski about two years later. As a result, 1905 Einstein cant be > using tau as a coordinate. This is only very elemental logic. A > concept cant be used before its development. I showed you already all > the relevant 1905 text. > > RVHG (Rafael Valls Hidalgo-Gato) Hi Rafael the concept was presented by Poincare in 1906, but indeed not by Einstein in 1905 - thanks for the reminder! Einstein's 1905 paper does not use a "time coordinate", but simply clock time in addition to a "system of co-ordinates". As he stressed: "If we wish to describe the motion of a material point, we give the values of its co-ordinates as functions of the time." He simply called the ensemble (x,y,z,t) a "system of values". Regards, Harald
From: valls on 13 May 2010 07:02
On 13 mayo, 04:33, harald <h...(a)swissonline.ch> wrote: > On May 12, 10:06 pm, va...(a)icmf.inf.cu wrote: > > [..] > > > > > > > > Tau is not a coordinate for 1905 Einstein. > > > ================================================== > > > REPEAT:> > Why not? What's different about it? > > > > > That tau represents time, a completely different from space concept > > > > ================================================= > > > > I'm not talking about your concepts, I'm talking about mathematical > > > coordinates. > > > > Which one isn't a coordinate in the moving system: xi, eta, zeta or > > > tau, you STOOOPID BABBLING FUCKWITTED CRETIN ? > > > 1905 Einstein uses Cartesian coordinates and Euclidean geometry. Both > > of them dont support time as a coordinate, a concept developed by > > Minkovski about two years later. As a result, 1905 Einstein cant be > > using tau as a coordinate. This is only very elemental logic. A > > concept cant be used before its development. I showed you already all > > the relevant 1905 text. > > > RVHG (Rafael Valls Hidalgo-Gato) > > Hi Rafael the concept was presented by Poincare in 1906, but indeed > not by Einstein in 1905 - thanks for the reminder! > Hi Harald, thanks for your contribution. > Einstein's 1905 paper does not use a "time coordinate", but simply > clock time in addition to a "system of co-ordinates". > As he stressed: "If we wish to describe the motion of a material > point, we give the values of its co-ordinates as functions of the > time." > As is done in orthodox Newtonian mechanics long before Einstein. > He simply called the ensemble (x,y,z,t) a "system of values". > Where t has a different from (x,y,z) physical dimension in all common unit systems. > Regards, > Harald Your comments are very appreciated by me. RVHG (Rafael Valls Hidalgo-Gato) |