{
  "id": 11008253,
  "title": "What butterfly wings have in common with barbershop poles",
  "url": "https://urgent.news/2026/09/30/what-butterfly-wings-have-in-common-with-barbershop-poles-11008253",
  "topic": "science",
  "section": "Science",
  "published": "2026-09-30T15:00:56.000Z",
  "source": {
    "name": "Ars Technica Science",
    "slug": "ars-technica-science",
    "url": "https://arstechnica.com/science/2026/09/what-butterfly-wings-have-in-common-with-barbershop-poles/"
  },
  "original_language": "en",
  "account": "Barbershop poles and butterfly wings share a common visual illusion that aids in survival. While humans perceive the stripes on a barbershop pole as moving upward, the pole itself rotates on a vertical axis. Similarly, many butterflies' wing patterns confuse predators, making it difficult for them to accurately gauge the butterfly's speed and direction. The stripes and spots on butterfly wings interfere with the way visual systems try to determine the direction and speed of moving objects, creating false motion cues. These illusions disrupt the predator's visual targeting system and prevent it from committing to a \"ballistic attack\" on the butterfly. As a result, predators often miss their target. Butterfly wings have captivated scientists since their growth was first documented in 1938. Recent advances in technology, such as high-speed video capture, have allowed researchers to study the unique structural growth of butterfly wings in real-time. The iridescent colors of butterfly wings are caused by photonic crystals, which are arranged in a similar pattern to a diffraction grating. This arrangement produces specific colors of light, rather than the entire spectrum like a traditional diffraction grating.",
  "summary": "Wing patterns, flight dynamics create \"motion dazzle\" effect, make it harder to gauge speed, direction.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 2,
    "also_reported_by": [
      {
        "outlet": "Ars Technica",
        "title": "What butterfly wings have in common with barbershop poles",
        "url": "https://urgent.news/2026/09/30/what-butterfly-wings-have-in-common-with-barbershop-poles",
        "published": "2026-09-30T15:00:56.000Z"
      }
    ]
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}