Radium dial on an older ww2 style military compass

Radium dial on an older ww2 style military compass

Using a geiger counter to test a Radium infused dial on an older British style lensatic compass from WW2 to the 1970's.

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 .