## Wikipedia - Legge di Stokes (it) Wikipedia - قانون ستوكس (ar) Stokes law

https://doi.org/10.1351/goldbook.S06028
$$F=6\ \pi \ \eta \ r\ \nu$$, where $$F$$ is the force exerted on a sphere of radius $$r$$ which is moving through a fluid of @[email protected] $$\eta$$ with a relative velocity $$\nu$$; this equation holds at low velocities which are free from turbulence (called the @[email protected] region).
Source:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2216 [Terms] [Paper]