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Fig. 5. Graphical representation of the effect of changing various parameters on
the predictive ability of thin-film Model 2. (A,B) The solid line shows Model
2 calculated from the variables as described in the text (extinction
coefficient k of keratin=0.03, melanin=0.6; refractive index
n of keratin=1.56, melanin=2.0). (A) The effects of increasing
k of keratin to 0.06 (dotted line) and melanin to 1.0 (broken line).
(B) The effects of increasing n of melanin to 2.2 (dotted line) and
decreasing n of melanin to 1.8 (broken line).