For example , an N - body simulation of a star cluster might have a particle per star , so each particle has some physical significance .
The ' particles ' treated by the simulation may or may not correspond to physical objects which are particulate in nature .
An N - body simulation of a star cluster might have a particle per star , so each particle has some physical significance .
The ' particles ' treated by the simulation may or may not correspond to physical objects which are particulate in nature .