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
Login

Be the first pioneers to continue the Astronomy Discussions at our new Astronomy meeting place...
The Space and Astronomy Agora
Actually Photons Still Move With The Same Speed C In Gravity.

Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To
Posted by Alexander on June 28, 2001 23:00:51 UTC

Ascending in gravitational field, they lose their energy (frequency, or color). If they lose all energy, frequency becomes zero and we can not see such photon - it ceases to exist. But it always moves with c.

Place around black hole from which photon loses all their energy till they get to us is called event horizon. On event horozon, under or over it a photon always moves with the same speed c. That is why it is called a constant - it does not depend on anything.

Clocks near event horizon appear for far away observer to run slow, and for close observer to run normal.

Follow Ups:

Login to Post
Additional Information
Google
 
Web www.astronomy.net
DayNightLine
About Astronomy Net | Advertise on Astronomy Net | Contact & Comments | Privacy Policy
Unless otherwise specified, web site content Copyright 1994-2020 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