Simple Proof that Nothing Can Move in Spacetime
Why is motion in spacetime impossible? It has to do with the definitions of space and time and the equation of velocity v = dx/dt. What the equation is saying is that, if an object moves over any distance x, there is an elapsed time t. Since time is defined in physics as a parameter for denoting change (evolution), the equation for velocity along the time axis must be given as v = dt/dt which is self-referential. The self-reference comes from having to divide dt by itself. dt/dt always equals 1 because the units cancel out. This is of course meaningless as far as velocity is concerned.
To emphasize, it is logically impossible for the t coordinate of an object to change because such a change is self-referential. Et voil?! It is that simple. No time travel, no motion in spacetime, no spacetime and no time dimension. They are all abstract mathematical constructs without any counterpart in nature.
"Die Tatsache, dass eine Meinung weithin geteilt wird, ist noch lange kein Beweis daf?r, dass sie nicht absolut absurd ist." - Bertrand Russell
Dieser Beitrag wurde schon 1 mal editiert, zum letzten mal von Nunja am 11.12.2005 14:21.