13: Friction and the Langevin Equation
- Page ID
- 294329
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Now let’s relate the phenomena of Brownian motion and diffusion to the concept of friction, i.e., the resistance to movement that the particle in the fluid experiences. These concepts were developed by Einstein in the case of microscopic motion under thermal excitation, and macroscopically by George Stokes who was the father of hydrodynamic theory.
- 13.2: Brownian Dynamics
- The Langevin equation for the motion of a Brownian particle can be modified to account for an additional external force, in addition to the drag force and random force.