brium, and lead to a significant population of unusually fast particles.InteractionsBinaryTwo-particle collisions are the rule, three-body collisions extremely rare.CollectiveWaves, or organised motion of plasma, are very important because the particles can interact at long ranges through the electric and magnetic forces.Complex plasma phenomena[සංස්කරණය]Although the underlying equations governing plasmas are relatively simple, plasma behaviour is extraordinarily varied and subtle: the emergence of unexpected behaviour from a simple model is a typical feature of a complex system. Such systems lie in some sense on the boundary between ordered and disordered behaviour, and cannot typically be described either by simple, smooth, mathematical functions, or by pure randomness. The spontaneous formation of interesting spatial features on a wide range of length scales is one manifestation of plasma complexity. The features are interesting, for example, because they are very sharp