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Topic: A black hole cannot pull light backward
Replies: 21   Last Post: Nov 19, 2011 11:42 PM

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Paul Hovnanian P.E.

Posts: 87
Registered: 12/13/04
Re: A black hole cannot pull light backward
Posted: Nov 15, 2011 5:50 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply wrote:

> On Nov 14, 4:57 pm, Tom Roberts <> wrote:
>> On 11/13/11 11/13/11 - 3:34 PM, james thomas wrote:

>> > [... uninformed nonsense]
>> Replying to the subject: In GR a black hole DOES "pull light backward".
>> One of the best definitions of the event horizon of a black hole is that
>> it is a closed trapped surface. That is, the horizon is closed (has no
>> boundary), and trapped -- every non-spacelike (timelike or null)
>> trajectory that intersects the surface goes into its interior. That means
>> no object can escape, and even light that is initially emitted outward
>> from the horizon actually goes inward. AFAICT that contradicts your claim
>> "cannot pull light backward".
>> Tom Roberts

> Do not forget: the way Mitch studies a black hole is by observing his
> unmentionable bodily orifice.
> PPJ.

From the inside?

Paul Hovnanian
Don't let your mind wander -- it's too little to be let out alone.

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