Stokes-Einstein equation

{
  "id": "MLC-T-CHM-011442",
  "term": "Stokes-Einstein equation",
  "field": "Chemistry",
  "definition": "A relationship that describes the diffusion coefficient of a spherical particle in a liquid, relating it to the particle's radius, the liquid's viscosity, and the absolute temperature. This equation is derived from a balance between the viscous drag force and the random thermal motion of the particle. It is often applied to estimate the size of macromolecules in solution from their measured diffusion coefficients.",
  "subject": "Polymer",
  "see_also": [
    "equivalent hydrodynamic radius",
    "translational diffusion coefficient",
    "translational frictional coefficient"
  ],
  "references": [
    "PAC, 2015, 87, 71. 'Definitions of terms relating to individual macromolecules, macromolecular assemblies, polymer solutions, and amorphous bulk polymers (IUPAC Recommendations 2014)' on page 103 (https://doi.org/10.1515/pac-2013-0201)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/stokes-einstein-equation/"
}