Blackholes2 Forum Message | |
| Forums: |
Atm ·
Astrophotography ·
Blackholes ·
Blackholes2 ·
CCD ·
Celestron ·
Domes ·
Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem |
|
|
|
|
||||
|
|
||||||
Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place... The Space and Astronomy Agora |
| Re: Speed Of Gravity
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by pmb on March 5, 2000 13:27:16 UTC |
re - Does gravity travel instantanious, or does it travel at a certain speed. -- The speed of gravity = the speed of light. But this only means that alterations in a distribution of matter will propagate at the speed of light. If I accelerate a body then it takes a certain time for another body to feel it. re - And can you detect what is inside a black hole, or at least the mass distribution, by measuring the gravity of the hole? ---- Sure. But you are limited by knowing only the amount of mass inside the hole. You can always tell how much mass is inside the hole by the manner in which objects orbit the hole. Or by the size of the event horizon etc. re What if you drop something into the hole and measures its position by the use of its gravity? what will then be detected? --- Good question. I bet that when you can no longer detect it that there is no distinction between the black hole as it was and the black hole with slightly more mass.
|
|
| Additional Information |
|---|
 |
| About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy |
|
Unless otherwise specified, web site content Copyright 1994-2025 John Huggins All Rights Reserved Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" are trademarks of John Huggins |