  The Monte Carlo calculations of the Moliere radius (RM) for some homogeneous
and heterogeneous media used in electromagnetic calorimetry in the energy range
from 50 MeV to 10 GeV are presented in detail. The obtained results, the
uncertainties in determining RM, estimations of the absorbed energy, methods
for approximating the absorbed energy, and the accuracy of the results are
discussed as well. Some RM are shown for calorimeter prototypes of the Spin
Physics Detector experiment (SPD). A one-parameter function of the Moliere
radius dependence on the absorber-scintillator thickness ratio is obtained.
