Skobeltsyn Institute of Nuclear Physics
Lomonosov Moscow State University

In work is supposed that main effects of the quantum mechanics follow from restriction on speed of change of the kinetic energy inducing a so-called threshold ratio on action. On borders of threshold intervals movement should correspond to the classical equations of dynamics. Between these - reference points movement can not be determined basically and it has casual character. The threshold equation for a finding of casual deviations of parameters of the movement, generalizing known equations of Schrodinger and Klein-Gordon is discussed.