What is this close-up picture? (WotsThat: Knitted wool stitch (macro))

Question

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

TungstenWolf · Accepted Answer

Knitted wool stitch (macro). When you zoom in on a knitted wool stitch under a microscope, you'll discover that the fabric is actually mostly air—sometimes up to 80% empty space—which is exactly why wool keeps you warm even when it weighs almost nothing. Those microscopic gaps trap body heat way more efficiently than the yarn fibers themselves do, making your cozy sweater essentially a clever arrangement of tiny insulating bubbles.

Answer: Knitted wool stitch (macro)

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