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单词 Stokes–Einstein equation
释义
Stokes–Einstein equation

Chemical Engineering
  • An equation used to determine the diffusion coefficient of particles through a liquid with low Reynolds number. It was first derived by Albert Einstein and based on a Stokes’s particle undergoing Brownian motion:

    D=kBT6πηr

    where kB is the Boltzmann constant, T is the absolute temperature, η is the viscosity, and r is the particle radius. The equation is of significance since it was first used to confirm molecular theory.


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