From: Viktor Golubik <diverge247.nul> Date: Fri, 09 Oct 2009 13:27:36 -0400 Archived: Sat, 10 Oct 2009 08:02:04 -0400 Subject: Re: Light And Gravity? >From: Robert Powell <rpowell.nul> >To: UFO UpDates - Toronto <post.nul> >Date: Fri, 09 Oct 2009 08:11:46 -0500 >Subject: Re: Light And Gravity? >>From: Greg Boone <Evolbaby.nul> >>To: post.nul >>Date: Thu, 8 Oct 2009 14:28:01 EDT >>Subject: Light And Gravity? >>The question came up regarding light coming from a large body >>like a star. >>If light can be effected by a gravitational field, does that >>mean light emanating from a large gravitational body like a >>star, start out slow and then accelerate to c or is c a constant >>and the mass of the photon not be effected only the perception >>of the velocity? >>C in a vacuum has a constant but amongst gravitaitonal forces >>does it indeed slow down or speed up? >This might be a better way to think about it. >Gravity bends and warps space. The result is that light is bent >because it travels through the space that is warped by gravity. >In the case of a black hole, space is warped to the point that >it's similar to a puncture in space so that nothing escapes, not >even light. >However, the speed of light does not vary whether it emanates >from a large gravitational body or not. >Does that make sense? Adding a little bit here: Essentially, trapped light has no path the leads away from a Black Hole and is bent back on itself leading to a point from where it began - or nearly so. Yes, the speed of light does not change. However, it's a matter of perspective and reference frame: To the observer traveling through a black hole or event horizon time travels as usual but behind them the universe is seen to advance in age (and to it's death?) as he looks backward out into space - traveling through and then eventually passing over the event horizon (their collected field of view would shrink as though looking through a tube). But, to an outside observer, at some distance away, the traveler appears to stick to the event horizon never reaching their directed destination point. This principle also allows forward time travel through a simple (?) process of orbiting a black hole at close range and then departing away from it. Backward time travel may also be possible if the shape of the black hole (neutron star) is that of a rapidly rotating cylinder (near the speed of light) - one could then hypothetically enter layers of older (wrapped up) space-time along paths parralell to it's axis or rotation. This allows backward travel to the point at which this hypothetical object was created. The frequency of light does change as a result of a gravitational field and is red shifted downward (loses energy/changes color) as it travels outward and is blue shifted (gains energy/changes color) as it travels toward a gravity field. The degree to which it does this depends upon the strength of the field. Photons (light) can escape from a black hole through a process called Hawking Radiation - thereby preserving thermodynamic laws. As a result, Black Holes can shrink over time. The smaller the Black Hole, the quicker the pace of decay and evaporation rate - pop! golubik Listen to 'Strange Days... Indeed' - The PodCast At: http://www.virtuallystrange.net/ufo/sdi/subscribers/ Your access info works there too... These contents above are copyright of the author and UFO UpDates - Toronto. They may not be reproduced without the express permission of both parties and are intended for educational use only.
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