The image displays three distinct photographs labeled (a), (b), and (c). Each photo features a curved shape resembling a segment of a circle, with a horizontal line at the bottom indicating a base. Each curve displays varying quantities of small dark specks distributed across their surfaces. The layout suggests a progression or comparison among the three forms, which possibly represent different experimental conditions or time points.
Adoption of different bead representation curves: a) circular arc; b) elliptical arc; c) parabolic curve