Illustration of precession and nutation of a spinning body. The blue “P” indicates the precession motion, the red “N” indicates the nutation motion, and the green “R” indicates the axis of rotation. Via Wikipedia.
1895: Cats meddle in geophysics
1895: Cats meddle in geophysics
Illustration of precession and nutation of a spinning body. The blue “P” indicates the precession motion, the red “N” indicates the nutation motion, and the green “R” indicates the axis of rotation. Via Wikipedia.
Skulls in the Stars 
