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A centrifuge is a device with a motor in it, which is used to spin an object with high speed. This high speed spinning forces the object outwards. This force is used for several purposes:
- a uranium centrifuge is used to separate two isotopes of uranium (named U-235 and U-238) from each other;
- in medical laboratories, serum is separated from the blood samples using a centrifuge;
- in chemical laboratories, centrifuges are used to subtract solid parts of an emulsion from its liquid parts.
- large centrifuges are used by NASA to expose astronauts to high forces for their training.