WOLFRAM|DEMONSTRATIONS PROJECT

Spacetime versus Spacespace

​
t
0
rapidity
-3
This Demonstration shows a spacetime and a spacespace configuration of light cones. Two space stations, at distance 10 from each other, begin emitting regular transmissions at
t=-5
. At
t=0
, a meeting is arranged halfway between the two space stations, so that representatives from many inertial reference frames can watch the first signals arrive together. Such a momentous event leads to a decision to make this the origin of all their reference frames:
(t,x)=(0,0)
.