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        Institut für Theoretische Physik

Basic Physics Course with MATLAB's Symbolic Toolbox and Live Editor

Animation 1: Action field of the Kepler/Coulomb problem

Action field of Keplerian orbits

Action function of Kepler problem

The action field S is shown above the x-y plane. The time dependence is animated. We see a screw that moves down (S= ... -Et). The speed of the devaluation movement is the energy E. To make it clear that it is not a rotation, the value of the action field S is additionally color-coded. Further details can be found in Chap03_2