Chart shows the changing appearance of copper throughout the patina process. While it makes perfect sense it never occurred to me that the Statue of Liberty had a different colour once. Source: https://t.co/VwSGjJvp1b pic.twitter.com/fLHwdCf3NK
— Simon Kuestenmacher (@simongerman600) June 13, 2020
via Twitter https://twitter.com/simongerman600
June 13, 2020 at 05:52PM
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