Grinding a 12.5-inch telescope mirror with 5-micron Aluminium Oxide

Grinding a 12.5-inch telescope mirror with 5-micron Aluminium Oxide

Last stage of grinding a 12.5-inch telescope mirror blank with an 11.5-inch tool. The tool consists of ceramic tiles arranged on a convex surface that matches the curve of the mirror.

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 .