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Diffusion coefficient meaning

  1. Jan 16, 2013 #1
    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?
  2. jcsd
  3. Jan 17, 2013 #2
    Sorry I dont 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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