A molecular mechanics method for chemical calculations These calculations can be single point, geometry optimization, or molecular dynamics A force field has three components: equations defining the potential energy of a molecular system as a function of atomic coordinates, atom types, and parameter sets that fit the equations to experimental data
That which exists in the space surrounding a mass, electric charge, or magnet, so that another mass, electric charge, or magnet introduced to this region will experience a force Examples of force fields are gravitational fields, electric fields, and magnetic fields
a kind of calculation which is used in molecular dynamics The calculation is semi-empirical, which means that the wavefunctions of the system are not determined