Measurement Based on Ficks First Law

FIGURE 10.4 Northrop-Anson experiment for the determination of diffusion coefficient. 

Let ji = 1,2,3. be the fringe numbers. We then arbitrarily divide these numbers 

Let J be the total number of fringes, for example, 18, and let and Hi be the microcomparator reading for the distance of each and ji from the refoence point, for example, yt = 1. The value of j is related to An byt 

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