A spaceship
is flying a distance of 5 light hours, for example from Earth to the planet
Pluto. The speed can be regulated with the upper buttons.
The applet demonstrates that the clock in the spaceship goes more slowly
then the two clocks of the system, in which Earth and Pluto are motionless.
Remarks:
- In a simplifying
way there was assumed an inertial system, in which Earth and Pluto are
motionless; especially the motion of the two planets around the sun
was neglected.
- According
to an important result of the theory of relativity on observer in the
Earth-Pluto-system would see the spacecraft shortened in the direction
of motion. This so-called Lorentz-Contraction was not taken into consideration,
in order to make it possible to read off the spaceship's clock.
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