アメリカ自然史博物館のインスタグラム(amnh) - 12月18日 06時22分

What makes butterfly wings colorful?
Butterfly wings are covered with tiny scales, each a single color. Most of the colors are produced by pigments, but the beautiful iridescence of some butterflies results from a reflective microstructure on the scale's surface. Don't touch a butterfly's wing—the "powder" that rubs off is actually the scales. #naturalhistory #insideamnh

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