Chronology | Current Month | Current Thread | Current Date |
[Year List] [Month List (current year)] | [Date Index] [Thread Index] | [Thread Prev] [Thread Next] | [Date Prev] [Date Next] |
That makes two of us. Well, I guess I can forage for a few scraps of
preverbal cogitation. In space-time we have replaced distance and
period of time with the *interval* between two events. Now, the reason
we think traveling faster than the speed of light IS SILLY is that the
interval between two events that lie on the light cone is zero. I have
been led to believe that if we traveled a just the speed of light, we would
arrive at the same instant that we departed. We can't expect to do better
than that. I thought that the interval between two events being zero made
the departure and arrival at two coordinates separated in a space-like
way coincident. Now, I'm not so sure.
But, if interval were a metric,
from the viewpoint of a photon every set of coordinates would seem like
every other. In a sense the Universe would have shrunk to a point.