On Feb 23, 2010, at 4:24 PM, Horace Heffner wrote:
Consider Frick's first law of steady state diffusion, which states
the flow vector J_i for species i is proportional to the
concentration vector (d c_i)/( d x) in typical cell conditions,
i.e., one dimensionally speaking:
J_i = - D (d c_i)/( d x)
where D is called the diffusion coefficient.
I accidentally left out a word above: "concentration vector" above
should say "concentration gradient vector".
Best regards,
Horace Heffner
http://www.mtaonline.net/~hheffner/
