SPUN BLOOD
Centripetal force is used in a laboratory centrifuge to accelerate the precipitation of particles suspended in liquid. One common use of this technology is for preparing blood samples for analysis. Under the normal force of gravity, thermal motion causes continuous mixing, which prevents blood cells from settling out of a whole blood sample. However, a typical centrifuge can achieve accelerations that are 600 to 2,000 times that of normal gravity. This forces the heavy red blood cells to settle at the bottom and stratifies the various components of the solution into layers according to their density.