title: Krogh length
text: # Krogh length
  
  The Krogh Length, $\lambda _{K}$, is the distance between capillaries at which nutrients diffuse to based on cellular consumption of the nutrients.
  
  It can be described as:
  
  $\lambda _{K}={\sqrt {D_{s}c_{o}/R}}$
  
  where $D_{s}$ is the diffusion constant of the solute in the substrate, $c_{o}$ is the concentration in the channel, and $R$ is the consumption by the cells. Units are in terms of length.
  
  