Question

write a report on history of spherical mirrors in human civilization

Answer 1

History of spherical mirrors in human civilization:

The first mirrors used by the people were most likely pools of water.
The earlier manufactured mirrors were polished stones such as obsidian , a naturally occurring volcanic glass.
In Mesopotamia, mirrors of copper were crafted around 6000 B.C
Bronze mirrors were manufactured around 2000B.C.
In china and India , Mirrors made up of copper and tin speculum metal are also been produced 
Romans used glass mirrors backed with gold leaf.
Ptolemy has conducted many experiments with curved polished iron mirrors.
China people started making mirror with the use of silver mercury amalgams as early as superior method of coating glass with tin mercury amalgam.
The invention of silver glass mirror is credited to Germans.
Thus, Silvering process was adapted for mass manufacturing and led to the greater availability of affordable mirros.