One extreme case is a complete lack of texture: a solid with perfectly [[random]] crystallite orientation will have [http://en.wikipedia.org/wiki/Isotropic isotropic] properties at length scales sufficiently larger than the size of the crystallites. The opposite extreme is a perfect single crystal, which has [http://en.wikipedia.org/wiki/Anisotropic anisotropic] properties by [[Geometry|geometric]] [[necessity]].[http://en.wikipedia.org/wiki/Texture_(crystalline)] | One extreme case is a complete lack of texture: a solid with perfectly [[random]] crystallite orientation will have [http://en.wikipedia.org/wiki/Isotropic isotropic] properties at length scales sufficiently larger than the size of the crystallites. The opposite extreme is a perfect single crystal, which has [http://en.wikipedia.org/wiki/Anisotropic anisotropic] properties by [[Geometry|geometric]] [[necessity]].[http://en.wikipedia.org/wiki/Texture_(crystalline)] |