Blackholes 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: Does Light Have Weight?
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Young Lee on September 19, 1997 22:50:53 UTC |
: I believe this can be clarified by considering the notion of momentum. Photons do have momentum which adhere to the laws of space-time (and hence gravity or : the "space-time warp"). Photons do have a rest mass (I think as prescribed by E=mc^2 -- please correct me if I am wrong) however, light does not have a true : mass. Allow me to correct myself. I believe that Photons do not have a rest mass -- they do have momentum. A photon will have energy E and that will translate into momentum by the formula E^2 = m^2c^4 + p^2c^2 where p is the momentum and m (=0 for photons) is the rest 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 |