= George Gabriel Stokes
{c}
{title2=1819–1903}
{wiki}
= George Stokes
{c}
{synonym}
<George Gabriel Stokes> connected <fluid> <viscosity> with corrections to precision <physical pendulum> measurements and with resistance on small moving bodies. His memoir explains why correcting only for <buoyancy> misses the <fluid>'s inertia and frictional effects. For steady <creeping flow> of a <Newtonian fluid> around a rigid <sphere>, the <Stokes drag law> is $F=6\pi\mu aU$, where $\mu$ is <dynamic viscosity>, $a$ is the <sphere>'s radius, and $U$ is its relative <speed>. The result assumes a <no-slip boundary condition> and an unbounded surrounding <fluid>. It connects measured settling or <damping> with <fluid> properties.<On the Effect of the Internal Friction of Fluids on the Motion of Pendulums by George Gabriel Stokes>[Opening pendulum motivation; Part I, section IV, articles 39–42, especially equation (126), steady sphere resistance; modern notation]{ref}
A <physicist> and <mathematician> associated with <Stokes flow>, <Stokes' second problem> and <Stokes theorem>.
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{title=Portrait of <George Gabriel Stokes>}
{description=Swan Electric Engraving Co., as credited by the File; Archivio storico dell’Accademia delle Scienze di Torino, catalog 0155, accession IST. 4.1.3. 2. Commons claims origin/life-plus-100-or-shorter public domain and pre-1931 United States publication. https://creativecommons.org/publicdomain/mark/1.0/[Source usage terms], via Wikimedia Commons.}
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{width=250}
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