Re: Black hole questions

bz wrote:
Under what conditions would the force of gravity be effected by the force of gravity?

In GR, gravity is not a "force", it is merely the geometry of the manifold. But the field equation is nonlinear, and in some sense gravity generates more gravity. Certainly near the horizon of a black hole the nonlinearity of the field equation is important (indeed there are no black holes in the linearized approximation to GR).

Note that in the solar system, gravity is so small that the nonlinearity is negligible except for certain esoteric measurements such as the precession of the perihelion of mercury.


Tom Roberts
.

Relevant Pages

  • Re: General Black Hole theory
    ... A black hole is an object whose gravity is so strong, ... great enough to collapse into a black hole, ... the nature of mass at large masses may give ... This mystic mass of dark matter works this way. ...
    (sci.astro)
  • Re: real warp drive
    ... Make use of the 22nd century's version of sub-light star drive ... An engineered black hole. ... A rotating cylinder with massive surface gravity can create a rotating ... rails - payloads freely travel at superoptical speeds. ...
    (rec.aviation.military)
  • Scientists Prepare to Place Einstein on the Rim of a Black Hole (Forwarded)
    ... Harvard-Smithsonian Center for Astrophysics ... Scientists Prepare to Place Einstein on the Rim of a Black Hole ... Scientists are preparing for the ultimate test of Einstein's law of gravity, ...
    (sci.astro)
  • Re: General Black Hole theory
    ... A black hole is an object whose gravity is so strong, ... great enough to collapse into a black hole, ... the nature of mass at large masses may give ... This mystic mass of dark matter works this way. ...
    (sci.astro)
  • Re: Black Holes are Spin
    ... And *where* does gravity come from, ... How does the gravity get out of the black hole? ... holes with no background in mathematics or physics. ... The radiating stars orbit the vortex until they radiate ...
    (sci.physics)