A hypothetical sphere, impenetrable to the surrounding medium, displaying in a hydrodynamic
field the same frictional effect as an actual
polymer molecule. The size of a hydrodynamically equivalent sphere may be different for different
types of motion of the macromolecule, e.g. for
diffusion and for viscous flow.
Source:
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by
A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997).
XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic,
J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
https://doi.org/10.1351/goldbook.
