Do chemicals of an average weight, such as Polyethylene Glycols, undergo granular convection (the Brazil nut effect)?
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$\begingroup$ Good question; is ultracentrifugation, en.wikipedia.org/wiki/Ultracentrifuge, affected by size of molecules, as well as mass? $\endgroup$– DrMoishe PippikJan 25 '15 at 5:10
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$\begingroup$ @DrMoishePippik is it? $\endgroup$– user2679447Jan 26 '15 at 16:32
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