Wolfram Language & System 11.0 (2016)|Legacy Documentation
A major feature of the Wolfram Language is its deep coverage of all common approaches to scientific models and modeling. The Wolfram Language allows models to be represented, manipulated, solved, simulated, and visualized. It also includes extensive data on specific named models.
FormulaData — common named formulas and equations
PhysicalSystemData — equations and other properties for common physical systems