-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Tim Bates wrote:
| Josef 'Jupp' Schugt wrote:
|
|> Superluminal speed ist nothing that requires a hyperspace. The
|> relative speed of galaxies for example is known to exceed the speed of
|> light.
|
| If you have two galaxies on opposite sides of the universe (call them
| A and B) with an observer in between (called O) then from O's frame
| of reference the sum of the speeds of A and B might exceed c (the
| speed of light), although neither galaxy's individual speed can
| exceed c, BUT from A's frame of reference B's speed does not exceed c
| and vice versa.

Actually it is the distance as a property of space-time that increases
faster than c. This means that light from B has no chance to reach A. So
~ no information from B reaches A and relativity is not violated.

The problem of frames of reference leeds me to the following question:

Say object A and B represent two physical objects moving at relativistic
speed. Should A.speed(B) represent the speed of B in the frame of
reference of A or the speed of A in the frame of reference of B?

Josef 'Jupp' Schugt
- --
Currently running Aurox 10.1 Quicksilver.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org

iD8DBQFCB3Unrhv7B2zGV08RAhMtAKC3awqdZCmpeuqXr5vsfnWk9K7qQQCeI7Fk
aRV2oGvQl+nYLN8ARpGQ48w=
=+xGn
-----END PGP SIGNATURE-----