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Re: Is Spacetime Flat or Curved ?

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On Saturday, July 6, 2019 at 2:22:40 AM UTC+3, Tom Roberts wrote:
> On 7/5/19 5:05 PM, poraty4@gmail.com wrote:
> > On Friday, December 22, 2017 at 8:13:21 AM UTC+2, 44so...@gmail.com wrote:
> >> Local Curvature of Space
> >> According to Einstein’s theory of general relativity, massive objects warp
> >> the spacetime around them, and the effect a warp has on objects is what we call gravity.
> > 
> > ===================================
> > (:-)
> > if so which   is the active part there ??
> > space or mess  ????
> > you say
> > mass ** is wrapping ''(mass is warped '' )



======================

Mr professional   parrot 
> > it means that the  active entity
> > is  .......     mass!!!

see  for instance   the 
Faraday experiment with the permanent magnet
and you will   get wiser  unless you  are a born parrot 
or may be
you are making  your  life  income as a teacher 
from f en ''curved space time ''''

TIA
Y.Porat
===============
 
> > and that s it!!! full stop!!
> 
> No, that is NOT it. The "source" of curvature in GR is the full 
> energy-momentum tensor, not just mass. So even massless phenomena such 
> as electromagnetic fields and waves can generate spacetime curvature, 
> and thus gravity.
> 
> Tom Roberts

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Is Spacetime  Flat or Curved ? 44socrat@gmail.com - 2017-12-21 00:02 -0800
  Re: Is Spacetime  Flat or Curved ? 44socrat@gmail.com - 2017-12-21 22:13 -0800
    Re: Is Spacetime  Flat or Curved ? poraty4@gmail.com - 2019-07-05 15:05 -0700
      Re: Is Spacetime Flat or Curved ? Tom Roberts <tjroberts137@sbcglobal.net> - 2019-07-05 18:22 -0500
        Re: Is Spacetime Flat or Curved ? poraty4@gmail.com - 2019-07-05 23:02 -0700
          Re: Is Spacetime Flat or Curved ? poraty4@gmail.com - 2019-07-13 08:36 -0700
        Re: Is Spacetime Flat or Curved ? margaretporat@gmail.com - 2020-07-26 02:14 -0700
          Re: Is Spacetime Flat or Curved ? Tom Roberts <tjroberts137@sbcglobal.net> - 2020-07-26 13:53 -0500
            Re: Is Spacetime Flat or Curved ? margaretporat@gmail.com - 2020-07-31 08:35 -0700
  Re: Is Spacetime  Flat or Curved ? 44socrat@gmail.com - 2017-12-23 00:27 -0800
    Re: Is Spacetime  Flat or Curved ? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-01-04 21:08 +0100
  Re: Is Spacetime  Flat or Curved ? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-01-04 21:07 +0100
  Re: Is Spacetime  Flat or Curved ? margaretporat@gmail.com - 2019-06-26 16:53 -0700
  Re: Is Spacetime  Flat or Curved ? poraty4@gmail.com - 2019-11-23 03:03 -0800
    Re: Is Spacetime  Flat or Curved ? poraty4@gmail.com - 2019-11-30 03:16 -0800

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