Per Volquartz's platinum prints - 2

Per Volquartz's platinum prints - 2

Workshop at Per Volquartz's House at Pasadena, CA. Per shows members of LA Photo Salon how to do platinum prints from a digital file. Per in his darkroom.

test Introduction to Chemistry

Introduction to ChemistryIntroduction to Chemistry

Self healing hydrogels and its industrial applications

Hydrogels are water-swollen, cross-linked polymeric structures produced by reactions of monomers or by hydrogen bonding. This hydrogels used in various applications .