Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > sci.physics.relativity > #473428

Re: The Kerr black hole

From Hilton Packett <wod@wcothr.ce>
Newsgroups sci.physics.relativity
Subject Re: The Kerr black hole
Date 2018-09-28 21:55 +0000
Organization Hilton Packett Institute
Message-ID <pom801$1cg2$3@gioia.aioe.org> (permalink)
References (2 earlier) <4095ed90-3e1b-4edd-b375-5a7c074c9559@googlegroups.com> <bd508b22-bde8-45d6-aa65-5c42529c1fa3@googlegroups.com> <b06dbb34-ce96-7f6c-85c7-3bd73fe9c48a@sbcglobal.net> <pom3cs$1416$5@gioia.aioe.org> <B7SdnbHYsLO8AjPGnZ2dnUU7_83NnZ2d@giganews.com>

Show all headers | View raw

Tom Roberts wrote:

> On 9/28/18 3:36 PM, Hilton Packett wrote:
>> Tom Roberts wrote:
>> Black holes are most likely real, [...]
>> 
>> In principle you can escape the horizon, using the kinetic energy from
>> the fall, plus the payload carrying propellant.
> 
> Not true. Once any timelike object enters the horizon of a black hole,
> no amount of kinetic energy or propellant can get it back outside the
> horizon. Moreover it is doomed to intersect the singularity at the
> "center" within finite proper time. This also applies to null objects
> (light), mutatis mutandis.

Yes, but I was thinking mass objects are falling through bellow light 
speed, since otherwise it would violate many other things. So I was 
thinking that the fall and rise energy cancels out, then you have the 
carrying propellant to give the additional push.

Back to sci.physics.relativity | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

The Kerr black hole mitchrae3323@gmail.com - 2018-09-25 18:46 -0700
  Re: The Kerr black hole JanPB <filmart@gmail.com> - 2018-09-25 20:48 -0700
    Re: The Kerr black hole mitchrae3323@gmail.com - 2018-09-25 21:25 -0700
      Re: The Kerr black hole JanPB <filmart@gmail.com> - 2018-09-26 23:57 -0700
        Re: The Kerr black hole Tom Roberts <tjroberts137@sbcglobal.net> - 2018-09-28 10:11 -0500
          Re: The Kerr black hole JanPB <filmart@gmail.com> - 2018-09-28 12:44 -0700
          Re: The Kerr black hole Hilton Packett <wod@wcothr.ce> - 2018-09-28 20:36 +0000
            Re: The Kerr black hole Tom Roberts <tjroberts137@sbcglobal.net> - 2018-09-28 16:37 -0500
              Re: The Kerr black hole Hilton Packett <wod@wcothr.ce> - 2018-09-28 21:55 +0000
              Re: The Kerr black hole JanPB <filmart@gmail.com> - 2018-09-28 15:02 -0700
                Re: The Kerr black hole Hilton Packett <wod@wcotahr.ce> - 2018-09-29 23:57 +0000
                Re: The Kerr black hole JanPB <filmart@gmail.com> - 2018-09-29 21:31 -0700
                Re: The Kerr black hole Hilton Packett <wod@wcotahr.ce> - 2018-09-30 16:20 +0000
                Re: The Kerr black hole moroney@world.std.spaamtrap.com (Michael Moroney) - 2018-09-30 17:08 +0000
                Re: The Kerr black hole Hilton Packett <wod@wcotahr.ce> - 2018-09-30 21:29 +0000
                Re: The Kerr black hole "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2018-09-30 09:44 -0700
        Re: The Kerr black hole Tom Roberts <tjroberts137@sbcglobal.net> - 2018-09-28 10:11 -0500
          Re: The Kerr black hole Hilton Packett <wod@wcotahr.ce> - 2018-09-30 16:43 +0000

csiph-web