USSR Radium High Radioactive Luminescent Plate 50mSv/H

USSR Radium High Radioactive Luminescent Plate 50mSv/H

kinda stuff used in old radios, toys, watch e.t.c.

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 .