Please submit sites directly related to statistical mechanics. If in doubt, have a look at other subcategories of Physics.
Statistical mechanics is the application of statistics to the field of mechanics. It relates the microscopic properties of individual atoms and molecules to the macroscopic or bulk properties of materials, hence explaining thermodynamics as a natural result of statistics and (classical or quantum) mechanics. It can, for example, predict the thermodynamic properties of bulk materials from the spectroscopic data of individual molecules.