“…Such crack arrays are observed in thin layers of paints, glazing and other coatings (Hu and Evans, 1989;Choules et al, 2001;Parbrook et al, 2003;Chan et al, 2004) which have undergone drying, curing or temperature change. They also exist on a larger scale in road paving (Timm et al, 2003;Hong et al, 1997) concrete (Bažant et al, 2003), drying of mud (Weinberger, 1999;Plummer and Gostin, 1981), soil (Chertkov, 2002), food (Akiyama et al, 1997) and timber (Kang and Lee, 2002) or the formation of basalt columns (Jagla and Rojo, 2002;Saliba and Jagla, 2003)and other geological features observed on Earth as well as other planets (Dance et al, 2001;Sletten et al, 2001).…”