12-17-2018, 03:25 PM
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Senior Member
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Join Date: Mar 2017
Location: ABQ, New Mexico
Posts: 36,633
Thanks: 3,506
Thanked 136,542 Times in 22,784 Posts
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In the past mirrors were backed with silver because it was highly reflective. Nowadays aluminium is used instead as it is cheaper and doesn’t tarnish over time like silver does.
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