Groups > sci.physics.relativity > #390008

Re: GR cannot

From	Sylvia Else <sylvia@not.at.this.address>
Newsgroups	sci.physics.relativity
Subject	Re: GR cannot
Date	2016-08-15 12:41 +1000
Message-ID	<e1coelFqbqmU1@mid.individual.net> (permalink)
References	(2 earlier) <8b9f219c-3231-4d35-b44c-755ada3996c3@googlegroups.com> <e17dcpFi4hgU1@mid.individual.net> <4d637f82-f3a3-4b66-a709-00fa549aa449@googlegroups.com> <e1aanfF8h3oU1@mid.individual.net> <575d4527-d5c5-4d79-b00c-d66fa5f844c2@googlegroups.com>

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On 14/08/2016 6:28 PM, Peter Riedt wrote:
> On Sunday, August 14, 2016 at 12:34:59 PM UTC+8, Sylvia Else wrote:
>> On 13/08/2016 1:51 PM, Peter Riedt wrote:
>>> On Saturday, August 13, 2016 at 10:02:04 AM UTC+8, Sylvia Else wrote:
>>>> On 13/08/2016 10:26 AM, Peter Riedt wrote:
>>>>> On Friday, August 12, 2016 at 8:17:21 PM UTC+8, Odd Bodkin wrote:
>>>>>> On 8/11/2016 9:31 PM, Peter Riedt wrote:
>>>>>>> GR cannot
>>>>>>>
>>>>>>> General relativity cannot predict or calculate anything, specifically the
>>>>>>> attributes G, g, M, m, GM, r, v, t and others of solar objects.
>>>>>>>
>>>>>>
>>>>>> G, M, m are not predicted by the theory.
>>>>>> But the trajectory parameters r, v, t are.
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Odd Bodkin --- maker of fine toys, tools, tables
>>>>>
>>>>> If r=50000km what is the corresponding v under GR?
>>>>>
>>>>
>>>> That's insufficiently specified. You need to specify m, and then specify
>>>> r and v as vectors at some point in time. GR then gives you v and r,
>>>> again as vectors, for any other time.
>>>>
>>>> Sylvia.
>>>
>>> My gravity theory can, GR cannot.
>>>
>>
>> If I position myself 50,000km from the centre of the sun, then I'll be
>> inside it. Not helpful.
>>
>> Let's say 50 million km from the centre, and at the instant in question,
>> not moving relative to the sun.
>>
>> Now I can project an object at an arbitrary velocity in an arbitrary
>> direction. One of three things can happen.
>>
>> a) The object disappears into interstellar space, never to be seen again.
>>
>> b) It follows a trajectory that impacts the sun.
>>
>> c) It orbits the sun along some ellipse, repeatedly returning to where I am.
>>
>> Clearly there are very many different velocities that can result in (c),
>> so no valid theory can possibly give a single velocity, and any theory
>> that purports to do so, such as yours, apparently, has to be wrong.
>>
>> Sylvia.
>
> Let's define specific parameters: An object is in orbit around the sun at say 50,000,000km or any other distance. My gravity theory can predict in what time t it will return to its original position.
>
> I am still waiting on Bod to tell me how GR can predict or calculate r, v, t of solar objects. I am of the opinion he can't.
>

I expect he can.

For this situation, with an object with a mass small compared with that 
of the sun, GR reduces to Kepler's third law. Since your orbit is at a 
constant distance, it is circular, and the semi-major axis is 50,000,000km.

Sylvia.

Thread

GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-11 19:31 -0700
  Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-12 07:17 -0500
    Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-12 17:26 -0700
      Re: GR cannot Sylvia Else <sylvia@not.at.this.address> - 2016-08-13 12:01 +1000
        Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-12 20:51 -0700
          Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-13 11:45 -0500
            Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-13 17:32 -0700
              Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-15 09:33 -0500
          Re: GR cannot Sylvia Else <sylvia@not.at.this.address> - 2016-08-14 14:34 +1000
            Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-14 01:28 -0700
              Re: GR cannot Sylvia Else <sylvia@not.at.this.address> - 2016-08-15 12:41 +1000
                Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-14 20:41 -0700
                Re: GR cannot Sylvia Else <sylvia@not.at.this.address> - 2016-08-15 14:55 +1000
                Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-14 22:15 -0700
                Re: GR cannot Sylvia Else <sylvia@not.at.this.address> - 2016-08-15 16:04 +1000
                Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-14 23:50 -0700
                Re: GR cannot Sylvia Else <sylvia@not.at.this.address> - 2016-08-15 17:03 +1000
                Re: GR cannot Poutnik <poutnik4nntp@gmail.com> - 2016-08-15 13:23 +0200
                Re: GR cannot Maciej Woźniak <mlwozniak@wp.pl> - 2016-08-15 15:15 +0200
                Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-15 06:42 -0700
                Re: GR cannot Poutnik <poutnik4nntp@gmail.com> - 2016-08-15 20:26 +0200
                Re: GR cannot Maciej Woźniak <mlwozniak@wp.pl> - 2016-08-15 22:05 +0200
                Re: GR cannot Poutnik <poutnik4nntp@gmail.com> - 2016-08-16 00:19 +0200
                Re: GR cannot mlwozniak@wp.pl - 2016-08-15 22:56 -0700
                Re: GR cannot JanPB <filmart@gmail.com> - 2016-08-16 14:31 -0700
                Re: GR cannot Gary Harnagel <hitlong@yahoo.com> - 2016-08-16 14:52 -0700
                Re: GR cannot Maciej Woźniak <mlwozniak@wp.pl> - 2016-08-17 08:33 +0200
                Re: GR cannot JanPB <filmart@gmail.com> - 2016-08-17 11:28 -0700
                Re: GR cannot mlwozniak@wp.pl - 2016-08-17 23:39 -0700
                Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-15 10:06 -0500
                Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-15 10:04 -0500
                Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-15 09:29 -0700
                Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-15 11:44 -0500
                Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-15 11:57 -0500
                Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-15 10:08 -0700
                Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-15 12:15 -0500
                Re: GR cannot Poutnik <poutnik4nntp@gmail.com> - 2016-08-15 20:29 +0200
              Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-15 09:40 -0500
                Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-15 09:58 -0700
                Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-15 12:05 -0500
                Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-15 10:11 -0700
                Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-16 13:27 -0500
                Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-16 20:16 -0700
                Re: GR cannot Tom Roberts <tjroberts137@sbcglobal.net> - 2016-08-16 23:10 -0500
                Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-16 22:48 -0700
                Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-18 13:52 -0500
                Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-15 12:09 -0500
                Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-15 10:16 -0700
                Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-16 13:27 -0500
      Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-13 11:42 -0500
    Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-13 17:28 -0700
      Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-15 09:31 -0500
        Re: GR cannot Peter Riedt <riedt1@yahoo.co.uk> - 2016-08-15 09:33 -0700
          Re: GR cannot Odd Bodkin <bodkinodd@gmail.com> - 2016-08-15 11:52 -0500
  Re: GR cannot Poutnik <poutnik4nntp@gmail.com> - 2016-08-16 00:10 +0200

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