How does gas centrifugation separate uranium-235 from uranium-238?

Gas centrifugation is a process used to separate the fissile isotope uranium-235 from the more abundant uranium-238 by exploiting their slight difference in mass.12

To perform this separation, natural uranium is first converted into uranium hexafluoride (UF₆) gas. This gas is then fed into a high-speed centrifuge that spins at an extremely high rate. Inside the spinning rotor, the gas molecules experience centripetal forces proportional to their mass.12

Because the molecules containing the heavier uranium-238 isotope are more massive than those containing the lighter uranium-235, the heavier species tend to accumulate along the outer walls of the centrifuge, while the lighter uranium-235 molecules concentrate near the center. These separated mixtures are then siphoned off. This method is more energy-efficient than gaseous diffusion and is a standard technique for producing enriched uranium fuel for nuclear reactors.314