Discussion of the Kamack equation

The Kamack treatment builds up the concentration gradients within the centrifuge for each of the measurement times. The Q j values (Table 8.5) may be determined using equation 8.19 and, in combination with they / values, generate the concentration gradients. 

In essence we are building up the concentration gradient between the measurement radius and the surface for each measurement time. For example, at / = 2 the concentration at the measurement radius is 3.8% and, from the first measurement we deduce that the concentration at a radius y, Q 2 s 5.3%. In figure (8.2) the concentration gradient for / = 7 is 

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