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## Main Question or Discussion Point

Hello all,

i read several threads concerning the a.m. topic, but are still not sure if i got it right.

Is "passing time" or moving in the 4th dimension in relativistic means a real changing of position in grade 4 spacetime or is it just a mathematical effect ?

Why asking: If i understood correctly, a resting massobject with no velocity in space S

If so, we do not recognice this movement (or at least, i don't do it). Is this comparable to other movements in space (and spacetime), that we do not recognice, f.i. the turning of planet earth or the movement of earth around the sun, which do really happen ?

Thanks for answers in advance.

Swen

i read several threads concerning the a.m. topic, but are still not sure if i got it right.

Is "passing time" or moving in the 4th dimension in relativistic means a real changing of position in grade 4 spacetime or is it just a mathematical effect ?

Why asking: If i understood correctly, a resting massobject with no velocity in space S

^{3}has a worldline parallel to the time-axis. If we compare two points in time on the worldline of this object, it has moved in the coordinate system from f.i. A to B in direction of D4, but not in space S^{3}.If so, we do not recognice this movement (or at least, i don't do it). Is this comparable to other movements in space (and spacetime), that we do not recognice, f.i. the turning of planet earth or the movement of earth around the sun, which do really happen ?

Thanks for answers in advance.

Swen