Insight: What is Brownian Motion?

Brownian Motion is the random movement of particles in a liquid caused by constant collisions with the fast-moving molecules of the containing liquid.

The ZetaView® from Particle Metrix uses this principle to calculate hydrodynamic particle size by analysing short video clips of particles moving in a liquid under Brownian Motion.

The ZetaView® software analyses video clips to calculate the mean square displacement. The Stokes-Einstein equation is then applied to calculate hydrodynamic particle size.


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