Glossary
Stokes' law
Stokes' law describes how fast a particle sediments through a fluid under force. In blood separation it governs why erythrocytes, leukocytes, and platelets settle at different rates, and therefore why centrifugation separates them at all.
In practice
The practical consequence is that platelet yield is bounded by physics rather than by machine price. A more expensive centrifuge does not change the sedimentation rate of a platelet.
See also