Why does the shape of Saturn's ring change?
- Let's explain the mystery in the planet by using Cabri & Cabri3D-
Tsukuba Gakuin University
From the example of Saturn's rings, it is shown that an
ellipse is a projection of inclinational circle. Next, we explain the
way of measuring this inclination by projection geometry. Finally, we
measure major axis and minor axis of Saturn¡¦s ring in photograph for five
years, and calculate the variation of Saturn¡¦s ring inclination seen from