ABSTRACT
In this chapter, the authors consider characteristic interphase fluctuation phenomenon, namely, the Brownian motion of a large spherical particle in an incompressible viscous liquid. They discuss the more general case of Brownian motion in a hydrodynamically nonequilibrium liquid. The authors introduce a specific feature characteristic of the Brownian motion of a large particle in a liquid. The heat capacity of the particle is considered so small that disturbances of the temperature field introduced by the particle motion would be negligible. The present state of nonequilibrium thermodynamics makes it possible to refine this model. Thus, the tangential components of the forces of the interaction with individual molecules are correlated, which ensures that together they produce the effect. The fluid is in a hydrodynamically nonequilibrium state. The movement of the particle generates an additional disturbance of the fluid state.
