When it was unveiled in 1886, the Statue of Liberty was the warm brown of new copper; the famous green is a patina that slowly formed as the metal reacted with the air over about thirty years.

Metallurgy (Statue of Liberty)

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Why it matters

The idea in context

Its copper skin is only about two millimetres thick — roughly two coins — yet the thin green crust that grew over it actually protects the metal beneath from further corrosion. When a plan was floated to repaint it during a 1980s restoration, the public objected: the colour we now think of as the statue is really the mark of time working on it.

Türkçe

Aynı kart, başka bir dilde.

1886'da açıldığında Özgürlük Heykeli, yeni bakırın sıcak kahverengisindeydi; ünlü yeşil renk, metalin yaklaşık otuz yıl boyunca havayla tepkimeye girmesiyle yavaşça oluşan bir patinadır.

Bakır derisi yalnızca iki milimetre kadar — kabaca iki madeni para — kalınlığındadır; yine de üzerinde büyüyen o ince yeşil kabuk, alttaki metali daha fazla aşınmadan korur. 1980'lerdeki bir restorasyonda heykeli yeniden boyama fikri ortaya atıldığında halk karşı çıktı: Bugün heykel diye düşündüğümüz renk, aslında zamanın onun üzerinde çalışmasının izidir.

Source trail

Read beyond the card.

Statue of Liberty (1886) copper skin ~2.4 mm; green verdigris patina developed by c. 1920, protecting the copper. National Park Service.

Background reading: Statue of LibertyAttribution and context are revised when stronger evidence appears. Corrections are welcome through the editorial page.
Next in the open archiveRodin's famous bronze 'The Thinker' exists in dozens of authorised casts around the world, because a bronze sculpture is made from a mould and can be legitimately cast more than once.Q1480