Figure 5.

Multiplication “rule” for mixtures of shapes. Values of ${\tilde{D}}_{\mathrm{eff}}$ (and D_eff, inset) for the mixture of cylinders (χ₁ = 4) and disks (χ₂ = 1/16) with phase fractions f₁ = f₂ = 0.5 (circles) and for disks only (squares) and cylinders only (triangles) are plotted against the corresponding power-law approximations f_α1,ϕc,1(ϕ) and f_α2,ϕc,2(ϕ) (dashed lines), with parameters α₁ = 3.6, ϕ_c,1 = 0.74 and α₂ = 1.64, ϕ_c,2 = 0.953 taken from Ref. 1, and the multiplication rule, f_α1,ϕc,1(ϕ₁)·f_α2,ϕc,2(ϕ₂) (solid line); ϕ₁=1−(1−ϕ)^f₁,ϕ₂=1−(1−ϕ)^f₂. Error bars were smaller than the symbol sizes.