Pattern formation

thumb|The formation of complex symmetrical and fractal patterns in [[snowflakes exemplifies emergence in a physical system.]] thumb|A termite "cathedral" mound produced by a termites|termite colony offers a classic example of emergence in nature.

one of a class of reactions that serve as a classical example of non-equilibrium thermodynamics, resulting in the establishment of a nonlinear chemical oscillator

spontaneous emergence of order out of seeming chaos

visible regularity of form found in the natural world

effect or phenomenon that is not invariant under a presumed or approximate symmetry of a physical system

demonstration of chemical kinetics

thumb|Washboarding effect on a road Washboarding or corrugations is the formation of periodic, transverse ripples in the surface of gravel and dirt roads. Washboarding occurs in dry, granular road material with repeated traffic, traveling at speeds above . Washboarding creates an uncomfortable ride for the occupants of traversing vehicles and hazardous driving conditions for vehicles that travel too fast to maintain traction and control.

how patterns in nature, such as stripes and spots, can arise naturally and autonomously from a homogeneous, uniform state

study of how patterns form by self-organization in nature