From Wikipedia,
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Peter Petrovich von Weymarn
(commonly mis-spelt von Weimarn)
(July
18,
1879 –
June 2,
1935) was a
Baltic German
chemist born in
St. Petersburg known for his
groundwork in
colloid science.
In 1906 he stated the von
Weymarn law: Colloidal
dispersions are obtained from very
dilute or very concentrated
solutions but not from
intermediate solutions. The
relative
supersaturation ratio herein
is defined by S=(Q-L)/L
(where Q is the amount of the
dissolved material and L is its
solubility).
