  Rotation of such objects as an atomic nucleus or a chromodynamical string can
result in specific effects in scattering processes and multiparticle
production. Secondary fragments of the rotating nucleus or of the decaying
string can move like stones thrown from a sling. That would be detected as the
azimuthal asymmetry of particle distributions in individual events.
Non-classical states of the created particles like the Schr"\{o}dinger cats are
produced. Some classical and quantum-mechanical estimates of possible effects
are given. Experimental facts which can be used for their verification are
discussed.
