From which a phase difference between The two partial oscillations of 120 °. The circular sense of the ellipse can be found, By measuring the deflections for different Values of ωt into a coordinate system (See Figure 4). This results in thumb pressure From the top left (bottom: in (*) only changes A sign) a circulation in the (opposite) Clockwise. The general analytical evaluation of (*) is Not easy, but can be easily through a whole Small computer program, which The resulting motion on a screen And, at the same time, the circumnavigation (See Listing). PROGRAM ellipse;