The first centrifuge was built by Alexander Prandtl in 1875 as a mean of separating cream from milk. Since then, the laboratory centrifuge developed to be a principal tool in scientific and clinical labs.
When an object is put in rotation around an axis, an outward radial force is applied on it. This centripetal force is used to accelerate Sedimentation, a process where denser particles move faster to the bottom, or in a centrifuge, towards an outward direction. This principle is used for several different applications in the modern lab, with the purpose of separating different constitutes within a solution: