{
  "id": 18153787,
  "title": "X-ray stopwatch can measure durations of just attoseconds",
  "url": "https://urgent.news/2026/11/04/x-ray-stopwatch-can-measure-durations-of-just-attoseconds",
  "topic": "science",
  "section": "Science",
  "published": "2026-11-04T00:00:00.000Z",
  "source": {
    "name": "Nature",
    "slug": "nature",
    "url": "https://www.nature.com/articles/d41586-026-03423-2"
  },
  "original_language": "en",
  "account": null,
  "summary": "Nature, Published online: 04 November 2026; doi:10.1038/d41586-026-03423-2 The duration of short ångström-wavelength X-ray pulses, which lasted merely 170 attoseconds, has finally been measured accurately. The optical system designed for precision pulse duration metrology can be used as a ‘stopwatch’ to measure the rapid motion of electrons inside atoms and molecules, too.",
  "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."
}