{
  "export": {
    "source": "https://urth.darkrealm.vip/thread/urth/1731",
    "note": "Exported from an unofficial mirror of a public mailing list. Copyright in each message remains with the person who wrote it.  Email addresses are obscured as `user at host`, the form the original archive published. This file was rebuilt from parsed fields rather than retained headers, so it is faithful in content but not byte-exact.",
    "addresses": "obscured as 'user at host'"
  },
  "archive": "urth",
  "thread": {
    "id": 1731,
    "subject": "Fliers of Urth",
    "messages": 1,
    "voices": 1,
    "first": "1999-08-02T18:25:17+00:00",
    "last": "1999-08-02T18:25:17+00:00"
  },
  "messages": [
    {
      "message_id": "<urth-v0028-0035@digest.urth.net>",
      "from": {
        "name": "Mitchell A. Bailey",
        "address": "mab at lindau.net"
      },
      "date": "1999-08-02T18:25:17+00:00",
      "subject": "(urth) Fliers of Urth",
      "in_reply_to": null,
      "reply_link": null,
      "blocks": [
        {
          "kind": "text",
          "depth": 0,
          "text": "Now let me get this straight: the cherry-leaf fliers the Autarch and a\nfew privileged characters of the Commonwealth (including Vodalus)\npossess supposedly get their lift from the supposed repulsion of\nantimatter to a gravitational field of pro-matter (i.e. that of Urth) —\nI.e. antimatter generates antigravity?\n\nThis looks like a definite case of \"hard-physics-this-ain't\". General\nrelativity definitely says that antimatter would behave\nindistinguishibly from promatter, gravitywise. Supposedly there are some\nexotic field theories out there that predict _maybe_ differently, but\nthey aren't any of them widely accepted. \n\nSo far as empirical confirmation is concerned, the amount of antimatter\never manufactured and collected so far can be inventoried by the\nparticle (antiprotons and positrons). So far, no one has succeeded in\nmaking antihydrogen atoms not moving at relativistic velocities, but\nthere's some work at CERN ongoing. That's sort of problematical for\nmeasuring acceleration in a gravitational field. Some early, very\nquestionable experiments suggest that antimatter does indeed fall down.\n\nDid Mr. Wolfe write himself out on a limb assuming that one of the\nexotic field theories which call for antigravity antimatter would pan\nout? Or did he have something else in mind altogether?\n\nNow, regarding the odd noisy \"locust\"- like fliers which were still\nextant during Typhon's reign - does anyone else get the idea that their\nthrumming racket, strange shape, and advancing extinction indicates\nthese are more or less conventional military helicopters? Such beasts\nare quite demanding, maintenance-wise.\n\nPerhaps the Ascian pentadactyls of Sev's time are more advanced\nhelicopter-like designs using protected rotors/blowers or their entire\nspinning hulls for lift, hence the strange wind Sev always notices\naccompanying them?"
        }
      ]
    }
  ]
}