More is the gold number less is the protective power of the lyophilic colloid since it means that the amount required is more.It was first used by Zsigmondy.
Richard Adolf Zsigmondy | Zsigmondy's grave (left) in the cemetery of Saint-Christophe-en-Oisans | Zsigmondy |
Zsigmondy was born in Vienna, Austrian Empire, to Hungarian parents Irma Szakmáry, a poet born in Martonvásár, and Adolf Zsigmondy Sr., a scientist from Bratislava who invented several surgical instruments for use in dentistry.