Question

what is the history of spherical 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

There are two types of spherical mirrors they are concave and convex mirror. 
These mirrors are also known as parabolic mirrors.The first mirrors used by people were most likely pools of dark, still water, or water collected in a vessel.The invention of concave and convex mirrors led to many changes and have become a part of our life .