Explore the fascinating world of Brownian motion through this comprehensive Ukrainian-language seminar lecture presented at the "Problems of Theoretical Physics" series for students, graduate students, and researchers. Delve into both known and unknown aspects of Brownian movement as Professor B.I. Lev shares insights and theoretical perspectives at the Bogolyubov Institute for Theoretical Physics. Learn advanced concepts in theoretical physics while examining this fundamental phenomenon that bridges microscopic and macroscopic physics.