| Svedberg | <unit> A unit for measuring the rate at which a particle sediments in a centrifuge. The unit applied to the sedimentation coefficient of a particle in a high speed or ultracentrifuge. S= rate of sedimentation x 1/ rho exp2r Where rho is the speed of rotation in radians per second and r is the radius to a chosen point in the centrifuge tube. 1 Svedberg unit is defined as a velocity gradient of 10exp 13 seconds. Named after a pioneer of the ultracentrifuge. The units are nonadditive: a particle formed from two 5S particles will not have a sedimentation coefficient of 10S. (18 Nov 1997) |
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| Svedberg equation | See: sedimentation constant. (05 Mar 2000) |
| Svedberg of flotation | Characteristic sedimentation behaviour of a lipoprotein fraction of plasma in a centrifugal field in a medium of appropriate density, achieved by adding a salt or D2O to the plasma. Synonym: negative S, Svedberg of flotation. (05 Mar 2000) |
| Svedberg unit | A sedimentation constant of 1 × 10-13 seconds. (05 Mar 2000) |
| Svedberg, Theodor | <person> Swedish chemist and Nobel laureate, 1884-1971. See: Svedberg equation, Svedberg of flotation, Svedberg unit. (05 Mar 2000) |