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Re: Tidal Forces - revisited, still unanswered

From Bídníkùm Laterá <bila@wehia.ui>
Newsgroups sci.physics.relativity
Subject Re: Tidal Forces - revisited, still unanswered
Date 2017-09-02 11:37 +0000
Organization Bídníkùm Laterá Institute
Message-ID <ooe555$1an5$1@gioia.aioe.org> (permalink)
References (1 earlier) <db86c365-c830-4243-af48-f5404ac5a3bd@googlegroups.com> <oo89h9$if4$1@gioia.aioe.org> <1a594d50-0fad-40b0-b99a-10a306b23b9b@googlegroups.com> <oo8he0$ul2$1@gioia.aioe.org> <d129d906-4971-48bc-8a0d-dc2953b9c222@googlegroups.com>

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JanPB wrote:

>> > No. What YOU wrote is pure gobbledygook. Sorry.
>> 
>> aHmmm?? At your age you didn't find out that your curvature is nothen
>> but a geometrical projection, a visual since you insist.
> 
> Again, meaningless.

Woot?? My friend, you didn't passed the subject, seemingly. The visual is 
the best you can do Physics, then here, in Relativity, specifically the GR 
one. YOU CAN'T DO BETTER THAN the VISUAL, which IS geodesic, a PROJECTION. 
Nobody can. You have much to learn, young man.

> Tidal force is acceleration of nearby particles per unit separation
> distance.

Wow, I suspect an accl to force confusion already!!

> This acceleration is the second covariant derivative of the particles'
> separation vector, where the derivative is taken in the direction of the
> test particle's trajectory (geodesic) as long as the parametrisation of
> the nearby geodesics satisfies certain orthogonality condition.

Not sure it has to do with "separations". Density yes, but you are 
ignoring the CRYSTAL STRUCTURE, which can be rigid(er), whereas your 
"separation vector" becomes totally obsolete, in fact wrong choice.

>     D_T( D_T(U) ) = R_{T,U} T
> So in GR you can calculate tidal forces by evaluating the Riemann tensor
> on certain vectors representing the body in question.

These symbols explain no _action at distance_, much less Forces, then it 
doesn't impress anybody. Better luck next time.

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Thread

Tidal Forces - revisited, still unanswered Bídníkùm Laterá <bila@wehia.ui> - 2017-08-27 09:34 +0000
  Re: Tidal Forces - revisited, still unanswered Bídníkùm Laterá <bila@wehia.ui> - 2017-08-27 09:44 +0000
    Re: Tidal Forces - revisited, still unanswered Sylvia Else <sylvia@not.at.this.address> - 2017-08-27 22:09 +1000
      Re: Tidal Forces - revisited, still unanswered Bídníkùm Laterá <bila@wehia.ui> - 2017-08-27 15:20 +0000
        Re: Tidal Forces - revisited, still unanswered Sylvia Else <sylvia@not.at.this.address> - 2017-08-28 14:38 +1000
          Re: Tidal Forces - revisited, still unanswered Bídníkùm Laterá <bila@wehia.ui> - 2017-08-28 19:04 +0000
            Re: Tidal Forces - revisited, still unanswered Sylvia Else <sylvia@not.at.this.address> - 2017-08-29 14:46 +1000
              Re: Tidal Forces - revisited, still unanswered Bídníkùm Laterá <bila@wehia.ui> - 2017-08-29 09:28 +0000
                Re: Tidal Forces - revisited, still unanswered Sylvia Else <sylvia@not.at.this.address> - 2017-08-29 22:07 +1000
                Re: Tidal Forces - revisited, still unanswered Bídníkùm Laterá <bila@wehia.ui> - 2017-08-29 16:36 +0000
                Re: Tidal Forces - revisited, still unanswered Sylvia Else <sylvia@not.at.this.address> - 2017-08-30 10:18 +1000
                Re: Tidal Forces - revisited, still unanswered Bídníkùm Laterá <bila@wehia.ui> - 2017-08-31 06:17 +0000
                Re: Tidal Forces - revisited, still unanswered Sylvia Else <sylvia@not.at.this.address> - 2017-08-31 17:10 +1000
                Re: Tidal Forces - revisited, still unanswered Ned Latham <nedlatham@woden.valhalla.oz> - 2017-08-31 02:11 -0500
  Re: Tidal Forces - revisited, still unanswered JanPB <filmart@gmail.com> - 2017-08-29 15:12 -0700
    Re: Tidal Forces - revisited, still unanswered Bídníkùm Laterá <bila@wehia.ui> - 2017-08-31 06:15 +0000
      Re: Tidal Forces - revisited, still unanswered JanPB <filmart@gmail.com> - 2017-08-31 00:45 -0700
        Re: Tidal Forces - revisited, still unanswered Bídníkùm Laterá <bila@wehia.ui> - 2017-08-31 08:29 +0000
          Re: Tidal Forces - revisited, still unanswered JanPB <filmart@gmail.com> - 2017-09-01 12:29 -0700
            Re: Tidal Forces - revisited, still unanswered Bídníkùm Laterá <bila@wehia.ui> - 2017-09-02 11:37 +0000
              Re: Tidal Forces - revisited, still unanswered Sylvia Else <sylvia@not.at.this.address> - 2017-09-03 11:21 +1000
                Re: Tidal Forces - revisited, still unanswered Bídníkùm Laterá <bila@wehia.ui> - 2017-09-03 10:58 +0000
              Re: Tidal Forces - revisited, still unanswered JanPB <filmart@gmail.com> - 2017-09-02 22:08 -0700
                Re: Tidal Forces - revisited, still unanswered Bídníkùm Laterá <bila@wehia.ui> - 2017-09-03 10:58 +0000
                Re: Tidal Forces - revisited, still unanswered JanPB <filmart@gmail.com> - 2017-09-04 05:16 -0700
                Re: Tidal Forces - revisited, still unanswered Ethel Ocallaghan <unlgclo@awlwaac.ag> - 2017-09-04 22:47 +0000
                Re: Tidal Forces - revisited, still unanswered Ethel Ocallaghan <unlgclo@awlwaac.ag> - 2017-09-03 22:12 +0000
                Re: Tidal Forces - revisited, still unanswered JanPB <filmart@gmail.com> - 2017-09-04 05:18 -0700
                Re: Tidal Forces - revisited, still unanswered mlwozniak@wp.pl - 2017-09-04 05:54 -0700
                Re: Tidal Forces - revisited, still unanswered Ethel Ocallaghan <unlgclo@awlwaac.ag> - 2017-09-05 12:19 +0000

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