Groups > sci.physics.relativity > #392608

Re: Negative Gravity?

From	"HGWilson, DSc." <hgw@....>
Newsgroups	sci.physics.relativity
Subject	Re: Negative Gravity?
Date	2016-09-17 04:41 +1000
Organization	Aioe.org NNTP Server
Message-ID	<nrhedk$cp$1@gioia.aioe.org> (permalink)
References	(5 earlier) <VuudnZC1xeBg6UrKnZ2dnUU7_8zNnZ2d@giganews.com> <880d7db4-a1f6-465c-8a51-267073b76fbc@googlegroups.com> <rKudnfqtAafEE0XKnZ2dnUU7_8zNnZ2d@giganews.com> <6bcdf586-cadd-4224-8564-2b2fa5f1fd27@googlegroups.com> <3cmdnbezaoXFtEfKnZ2dnUU7_83NnZ2d@giganews.com>

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On 15/09/16 14:53, Tom Roberts wrote:
> On 9/14/16 9/14/16   2:56 PM, RichD wrote:

> Such an EM wave has no mass, in that the norm of its 4-momentum is zero.
> But it follows a null geodesic through spacetime, and thus "falls" in
> gravity. It has energy and so influences the geometry of spacetime, and
> thus can "attract" other objects gravitationally. In GR these last two
> are simply geometry, and there's no such thing as "gravitational mass"
> or "gravitational force".

Crap! Drawing curved lines on a fictitious graph does not create a force!

> In GR, the concept "mass" applies only to objects, and an object's mass
> is the norm of its 4-momentum; classical (Newtonian) ideas don't really
> apply. In general it's best to consider how a given object behaves, and
> not attempt to apply outmoded labels from past theories.

Einstein's 'spacetime' assumes constant light speed and its therefore 
nonsense. Newtonian space/time is a mathematical convenience that tells 
the true story in space over time.

Einstein never explained the existence of gravity. He merely introduced 
a silly error in its ability to attract.

> Tom Roberts

Thread

Negative Gravity? "HGWilson, DSc." <hgw@....> - 2016-08-29 06:53 +1000
  Negative Gravity? "David (Time Lord) Fuller" <fuller.david@hotmail.com> - 2016-08-28 18:08 -0700
  Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-08-28 22:08 -0500
    Re: Negative Gravity? "HGWilson, DSc." <hgw@....> - 2016-08-29 21:01 +1000
      Re: Negative Gravity? JanPB <filmart@gmail.com> - 2016-08-30 12:12 -0700
        Re: Negative Gravity? "HGWilson, DSc." <hgw@....> - 2016-08-31 07:02 +1000
          Re: Negative Gravity? JanPB <filmart@gmail.com> - 2016-08-30 15:10 -0700
            Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-08-31 10:16 -0500
              Re: Negative Gravity? mlwozniak@wp.pl - 2016-08-31 23:07 -0700
      Re: Negative Gravity? Peter Riedt <riedt1@yahoo.co.uk> - 2016-09-02 19:15 -0700
        Re: Negative Gravity? "HGWilson, DSc." <hgw@....> - 2016-09-04 07:59 +1000
    Re: Negative Gravity? RichD <r_delaney2001@yahoo.com> - 2016-08-31 11:37 -0700
      Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-08-31 21:00 -0500
        Re: Negative Gravity? "HGWilson, DSc." <hgw@....> - 2016-09-03 09:31 +1000
          Re: Negative Gravity? Gary Harnagel <hitlong@yahoo.com> - 2016-09-02 18:05 -0700
            Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-03 08:19 -0500
              Re: Negative Gravity? Gary Harnagel <hitlong@yahoo.com> - 2016-09-03 09:55 -0700
            Re: Negative Gravity? "HGWilson, DSc." <hgw@....> - 2016-09-04 08:00 +1000
              Re: Negative Gravity? Gary Harnagel <hitlong@yahoo.com> - 2016-09-03 18:36 -0700
          Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-06 12:22 -0500
            Re: Negative Gravity? HGW <hw@....> - 2016-09-14 08:35 +1000
  Re: Negative Gravity? Alan Folmsbee <omnilobe@gmail.com> - 2016-08-28 21:48 -0700
    Re: Negative Gravity? "HGWilson, DSc." <hgw@....> - 2016-08-29 21:53 +1000
      Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-08-30 10:11 -0500
        Re: Negative Gravity? RichD <r_delaney2001@yahoo.com> - 2016-09-12 10:21 -0700
          Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-12 22:39 -0500
            Re: Negative Gravity? HGW <hw@....> - 2016-09-14 08:16 +1000
              Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-13 18:26 -0500
                Re: Negative Gravity? HGW <hw@....> - 2016-09-15 08:29 +1000
                Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-14 23:23 -0500
                Re: Negative Gravity? moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-15 15:42 +0000
                Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-15 12:37 -0500
                Re: Negative Gravity? moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-16 03:30 +0000
                Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-15 23:30 -0500
                Re: Negative Gravity? moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-16 16:23 +0000
                Re: Negative Gravity? "HGWilson, DSc." <hgw@....> - 2016-09-16 06:40 +1000
                Re: Negative Gravity? Odd Bodkin <bodkinodd@gmail.com> - 2016-09-15 16:13 -0500
                Re: Negative Gravity? moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-16 03:34 +0000
                Re: Negative Gravity? "HGWilson, DSc." <hgw@....> - 2016-09-17 04:29 +1000
                Re: Negative Gravity? moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-09-16 21:05 +0000
            Re: Negative Gravity? RichD <r_delaney2001@yahoo.com> - 2016-09-13 15:58 -0700
              Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-13 18:40 -0500
                Re: Negative Gravity? RichD <r_delaney2001@yahoo.com> - 2016-09-14 12:56 -0700
                Re: Negative Gravity? Gary Harnagel <hitlong@yahoo.com> - 2016-09-14 13:34 -0700
                Re: Negative Gravity? Odd Bodkin <bodkinodd@gmail.com> - 2016-09-14 15:40 -0500
                Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-14 23:53 -0500
                Re: Negative Gravity? RichD <r_delaney2001@yahoo.com> - 2016-09-16 11:37 -0700
                Re: Negative Gravity? Odd Bodkin <bodkinodd@gmail.com> - 2016-09-16 14:21 -0500
                Re: Negative Gravity? Odd Bodkin <bodkinodd@gmail.com> - 2016-09-16 14:21 -0500
                Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-16 22:25 -0500
                Re: Negative Gravity? RichD <r_delaney2001@yahoo.com> - 2016-09-19 12:43 -0700
                Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-19 17:01 -0500
                Re: Negative Gravity? Odd Bodkin <bodkinodd@gmail.com> - 2016-09-20 08:37 -0500
                Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-20 09:23 -0500
                Re: Negative Gravity? RichD <r_delaney2001@yahoo.com> - 2016-09-20 17:54 -0700
                Re: Negative Gravity? Gary Harnagel <hitlong@yahoo.com> - 2016-09-20 20:15 -0700
                Re: Negative Gravity? RichD <r_delaney2001@yahoo.com> - 2016-09-21 12:32 -0700
                Re: Negative Gravity? Gary Harnagel <hitlong@yahoo.com> - 2016-09-21 15:03 -0700
                Re: Negative Gravity? Odd Bodkin <bodkinodd@gmail.com> - 2016-09-21 07:48 -0500
                Re: Negative Gravity? "HGWilson, DSc." <hgw@....> - 2016-09-17 04:41 +1000
                Re: Negative Gravity? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-09-19 11:14 -0500
                Re: Negative Gravity? Koobee Wublee <koobee.wublee@gmail.com> - 2016-10-03 23:20 -0700
  Re: Negative Gravity? kenseto <setoken@att.net> - 2016-08-29 08:59 -0700
  Negative Gravity? "David (Time Lord) Fuller" <fuller.david@hotmail.com> - 2016-08-29 09:57 -0700
  Re: Negative Gravity? numbernumber1964@gmail.com - 2016-08-31 11:48 -0700
    Re: Negative Gravity? Gary Harnagel <hitlong@yahoo.com> - 2016-08-31 14:16 -0700
    Re: Negative Gravity? "David (Time Lord) Fuller" <fuller.david@hotmail.com> - 2016-08-31 14:46 -0700

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