What is this close-up picture? (WotsThat: Soap bubble film)

Question

What object is shown in this zoomed-in close-up photo?

FrostLogic · Accepted Answer

Soap bubble film. Soap bubble films are only a few hundred nanometers thick, yet they create those stunning rainbow colors through a phenomenon called thin-film interference. The bubbles are actually made of two layers of soap molecules with water trapped between them, which is why they're so delicate and prone to popping.

Answer: Soap bubble film

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