Figure 9From: An unambiguous cloudiness index for nonwovensEstimates of the power spectrum of the nonwoven FL1 from the images in Figs. 7a-d and the function from (7) fitted to the power spectrum of Fig. 7a with \(\lambda =6.4\text{ mm}^{-1}\) and \(\nu =0.231\). Top: logarithmic scale. Bottom: zoomed into sub-range, linear scaleBack to article page