Question

history of sperical mirrors in human civilization

Answer 1

the earlier manufactured mirrors were the pieces of polished stones. parabolic mirrors were described and studied in classical antiquity by the mathematician diodes in his work on burning mirrors. In china people began making mirrors with the use of silver mercury amalgams as early as 500AD. In 16th century, venice, a big city formed for its glass making expertise, became a centre of mirror production using this new technique. 

Answer 2

The earliest manufactured mirrors were pieces of polished stone such as obsidion a naturally occuring volcanic glass.Mirrors pf copper were crafted in msopotamia from around 6000BC.Bronze mirros were manufactured from around 2000BC.Mirrors made up of mixuters of copper and tin are produced in china and India.The invention of the silvered glass mirror is credited to Germany.Glass mirror backed with GOLD leaf was used by Romans.Metal coated glass mirrors are invented in Sidon in first century AD