Introduction: In many theoretical investigations [e.g. 1–8] the normal modes of the linearized equations of rotation are computed, yielding both the periods and the eigenspaces of three librations. Libration in longitude decouples from the other two, vertical modes. There is a fast vertical mode (polar motion) with a period very close to the average rotational period. It corresponds to tilting ...

The effect of the nutation angle on flow inside a precessing cylinder is experimentally explored and compared with numerical simulations. focus laid typical breakdown directly forced m = 1 Kelvin mode for increasing precession ratio (Poincaré number) accompanying transition between laminar turbulent flows. Compared to reference case 90° angle, prograde rotation leads an earlier breakdown, while...

Inertial effects in spin dynamics are theoretically predicted to emerge at ultrashort time scales, but their experimental signatures often ambiguous. Here we calculate the spin-wave spectrum ferromagnets and two-sublattice antiferromagnets presence of inertial effects. It is shown how precession nutation waves hybridize with each other, leading renormalization frequencies, group velocities, eff...