The article by M. von Smoluchowski discusses the kinetic theory of Brownian motion and suspensions, building on earlier work by Einstein. The author addresses the debate over the nature of Brownian motion, which was reignited by Einstein's theoretical works. Smoluchowski argues that his method, while direct and simpler, may be more convincing than Einstein's. He reviews experimental results and critical analyses of various explanations, concluding that Brownian motion is indeed consistent with molecular movements. The article also explores the independence of Brownian motion from external conditions and the independence of its intensity from light intensity. It further delves into the kinetic theory, proposing that Brownian motion results from the random collisions of particles with surrounding molecules. The author derives formulas for the average distance traveled by particles and compares them with experimental data, showing good agreement. The article concludes by discussing the implications of the kinetic theory for diffusion and the stability of suspensions, suggesting that the theory explains many observed phenomena.The article by M. von Smoluchowski discusses the kinetic theory of Brownian motion and suspensions, building on earlier work by Einstein. The author addresses the debate over the nature of Brownian motion, which was reignited by Einstein's theoretical works. Smoluchowski argues that his method, while direct and simpler, may be more convincing than Einstein's. He reviews experimental results and critical analyses of various explanations, concluding that Brownian motion is indeed consistent with molecular movements. The article also explores the independence of Brownian motion from external conditions and the independence of its intensity from light intensity. It further delves into the kinetic theory, proposing that Brownian motion results from the random collisions of particles with surrounding molecules. The author derives formulas for the average distance traveled by particles and compares them with experimental data, showing good agreement. The article concludes by discussing the implications of the kinetic theory for diffusion and the stability of suspensions, suggesting that the theory explains many observed phenomena.