How is cream separated from milk?

The process of centrifugation is used in dairies to separate cream from milk.
Centrifugation is a method for separating the suspended particles of a substance from a liquid in which the mixture is rotated at a high speed in a centrifuge machine.
The milk is put in a closed container in a big centrifuge machine.
When the centrifuge machine is switched ON, the milk is rotated at the very high speed in a container.
Due to this process, milk separates into cream and skimmed milk.
The cream being lighter floats over the skimmed milk.