{
  "id": 16225221,
  "title": "Plain silicon grating reveals a hidden 'twist' in light from electron beams",
  "url": "https://urgent.news/2026/10/23/plain-silicon-grating-reveals-a-hidden-twist-in-light-from-electron",
  "topic": "science",
  "section": "Science",
  "published": "2026-10-23T20:20:08.000Z",
  "source": {
    "name": "Phys.org",
    "slug": "phys-org",
    "url": "https://phys.org/news/2026-10-plain-silicon-reveals-hidden-electron.html"
  },
  "original_language": "en",
  "account": null,
  "summary": "In 1953, two physicists showed that an electron beam skimming past a grating emits light whose color depends only on the electron's speed and the grating's spacing. Known as Smith-Purcell radiation, this phenomenon has become a useful tool for building compact, tunable light sources and tracking particle beams without touching them.",
  "key_points": [],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "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."
}