Fig. 1.

Interparticle contact forces in compression jammed packings. (A) A typical experimental stress image of photoelastic disks visualized by two matched circular polarizers, in which a small portion of the image is enlarged. (B) The corresponding force network is plotted, in which the thicknesses of bond are proportional to the magnitudes of the measured contact forces. (C) The probability density distributions of contact forces P(f) for isotropically jammed packings at different pressure levels. C, Inset shows the fitted power-law exponent θ_f of P(f) versus pressure levels, and error bars represent SDs of the fitted coefficients. The black dashed lines in the main panel and Inset represent a power law with an exponent ${\theta }_f=0.42311$, which is given by the fullRSB theory.