Copyright © 1999 David E. Rutherford
All Rights Reserved
If the spacetime interval,
, in either
frame is between events that are separated, solely, by a time interval, i.e.
, then
, where
is the
proper time. Since the proper time
is the only
component in the interval, we have
. Similarly,
if the events are separated solely by a space interval, i.e.
, then
, where
is the
proper length, hence,
. The proper
time,
,
and the proper length,
, are always
the maximum measurements of time and length made between events in
any frame. We put no primes on the proper time or length, since they are
the same in all reference frames. If there are space and time components
of the spacetime interval between events in a reference frame, then
neither component is proper and both will be less than the proper
value. However, an observer can always determine the proper values from his
own components. In general, the proper value of any quantity, in this
theory, will be its maximum value.
Copyright © 1999 David E. Rutherford
All Rights Reserved
E-mail: drutherford@softcom.net