What is centrifugation? Which substance is separated by this method?

centrifugation is when you use force to separate components of a substance you use centrifugation on blood when you separate plasma cells from blood cells

Centrifugation is a technique which involves the application of centrifugal force to separate particles from a solution according to their size, shape, density, viscosity of the medium and rotor speed.

Explanation:

for example

You can separate cream from milk using this process, heavier particles can be separated from lighter from liquids.