Back to Home

Blackholes Forum Message

Forums: Atm · Astrophotography · Blackholes · Blackholes2 · CCD · Celestron · Domes · Education
Eyepieces · Meade · Misc. · God and Science · SETI · Software · UFO · XEphem
RSS Button

Home | Discussion Forums | Blackholes I | Post

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
GR Postulates Local Equivalency Between Gravity And Acceleration

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Alexander on October 2, 2001 00:23:44 UTC

This means "In infinitely small volume of space" (the case of "flat Earth"). And then it integrates over large volume to calculate actual geodesics for actual mass-energy distribution.

So, globally gravity is NOT equivalent to acceleration - indeed two masses will move toward each other if placed horisontally and away from each other if placed verically in a free fall.

But GR does not fall apart because all events in universe are local (connected locally, not globally). Even gravity itself propagates with the finite speed (=of light c) making all gravitational events local and causal.

Follow Ups:

    Login to Post
    Additional Information
    About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
    Unless otherwise specified, web site content Copyright 1994-2022 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