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As as in the experiment with monosized spheres,
the Powers equation is only compared to the measurements of the
95 * th* percentile of the paste-void spacing distribution. As in the
case of monosized spheres, the Powers equation is directly proportional
to the 95 * th* percentile. However, for this distribution of lognormally
distributed sphere radii, the Powers equation is a constant factor of
1.5 larger than the 95 * th* percentile.