What is this close-up picture? (WotsThat: Spaghetti strand texture (macro))

Question

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

MoonstoneDrift · Accepted Answer

Spaghetti strand texture (macro). Dry spaghetti almost never snaps cleanly in two when bent; it usually breaks into three or more pieces, a puzzle physicists including Richard Feynman wrestled with until the maths was finally worked out in 2005.

Answer: Spaghetti strand texture (macro)

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