It is well known, that according to Special Relativity during an exchange of signals between two observers only a
mutual consideration of the time needed in both directions is possible. Nevertheless, in the past effort was made to
measure the one way speed of light inside a system in motion. One of these attempts to perform a separate
measurement was the examination of the effect that occurs, when clocks are moved at slow speed inside a moving observer. In
this case a system in motion is considered, where two clocks after an Einstein Synchronization are lined up and one
is following the other. To execute the experiment the clocks are moved in this system in a way, that after the end
of the trial they have changed their positions. When the experiment is carried out at low speed the synchronization
should maintain its original values and after a further synchronization process a difference should appear.
Since some time it is clear, however, that the effects measured by both clocks is changing exactly corresponding to their
position inside the system and therefore leading to a null result. This
important verification and the necessary calculations are presented here, first simply by means of an example and afterwards
it will be treated in a general way. Further in this chapter the well-known twin paradox will be discussed and it will
appear as a special case of the clock transport.