Question

difference Between Brownian motion and diffusion​

Answer 1

Answer:

Brownian motion : It is the random motion of particles of matter in the air..

EG : Sometimes, we can see dust particles randomly moving in air..

Diffusion : The process of intermixing of two substances is known as Diffusion..

EG : Perfume sprayed in one part of the room, diffuses in air and see can smell it everywhere in the room..

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Answer 2

The theory of Brownian motion is perhaps the simplest approximate way to treat the dynamics of nonequilibrium systems. The fundamental equation is called the Langevin equation; it contain both frictional forces and random forces. The fluctuation-dissipation theorem relates these forces to each other.