Answers

2014-09-29T11:32:31+05:30
1)The earliest manufactured mirrors were pieces of polished stone such as obsidion a naturally occuring volcanic glass.
2)Mirrors of copper were crafted in mesopotamia from around 6000 B.C.
3)Bronze mirrors were manufactured from around 2000 B.C.
4)Mirrors made up of mixture of copper and tin are produced in china and india.
5)Metal coated glass mirrors are invented in Sidon in first century A.D.
6)Glass mirrors backed with gold leaf were used by Romans.
7)Ptolemy conducted number of experiments with curved polished iron mirrors.
8)China people began making mirrors with the use of silver mercury amalgams.
9)The invention of the silvered glass mirror is credited to German. 

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