Mmastodon ScienceScience first seen 3 h ago, last 3 h ago, peak #6
Butterfly wings share a trick with barbershop poles
Original: What butterfly wings have in common with barbershop poles https://arstechnica.com/science/2026/09/what-butterfly-wings-h
Ars Technica reports that butterfly wings and the classic rotating barbershop pole rely on the same visual phenomenon: motion illusions created by how light and structure interact. In both cases, patterns moving in one direction can appear to shift the opposite way, a property tied to the microscopic structure of wing scales and the geometry of the striped pole, with implications for studying optics and perception in biology.
Why now: A new science article draws a surprising optical link between insect coloration and a familiar everyday illusion.
Evidence
- What butterfly wings have in common with barbershop poles https://arstechnica.com/science/2026/09/what-butterfly-wings-have-in-common-with-barbershop-poles/ # Science # Biology # Optics · ars_technica@robot.villas · 2
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