A<unk>  in many separation processes is a hypothetical zone or stage in which two phases, such as the liquid and vapor phases of a substance, establish an equilibrium with each other. Such equilibrium stages may also be referred to as an equilibrium stage or a<unk>  tray. The performance of many separation processes depends on having a series  of equilibrium stages and is enhanced by providing more such stages. In other words, having more<unk> s increases the efficacy of the separation process be it either a distillation, absorption, chromatographic, adsorption or similar process.
Theoretical plate
Dose Profile
Potential energy
Cartesian coordinate system
Overview template
Rhythm method
Molecular orbital
Median