What is the meaning of diffusion coefficient?

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    Coefficient Diffusion
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SUMMARY

The diffusion coefficient quantifies the rate at which particles diffuse in a medium when there is a concentration gradient. It is a statistical measure that applies to a collection of particles rather than to individual particles. The analogy used in the discussion compares the diffusion coefficient to average marks, emphasizing that it lacks meaning when applied to a single entity. Understanding this concept is crucial for fields involving particle dynamics and concentration gradients.

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phyky
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diffusion coefficient meaning is the coefficient of particles diffuse when different in concentration. How about diffusion coefficient of a particle? the trajectory where a particle diffuse?
 
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Sorry I don't get your question clearly. There is no diffusion coefficient of a single particle, as diffusion coefficient is a statistical quantity and applicable to a collection of particle. Just like average marks of a single person's marks is meaningless.
 

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