{
  "schema_version": 1,
  "case": "cavity-standing-wave",
  "title": "A pulse leaves a standing wave in a closed cavity",
  "media_kind": "time-domain-fdtd-snapshots",
  "core_source_commit": "a9054338616b91bb1364699882c2530fa29a0048",
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  "evidence_status": "qualitative single-mesh teaching example",
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    "CPML is a finite numerical absorber and may reflect residual fields"
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        "waveform": "ModulatedGaussian",
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        "cutoff": 3.0,
        "amplitude_A": 1e-08,
        "amplitude_kind": "current"
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      "probe_position_m": [
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      "snapshot_slice_coord_m": 0.0005,
      "snapshot_dims": [
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        "y"
      ],
      "preflight_stdout": "  [PREFLIGHT] All checks passed.\n",
      "preflight_codes": []
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  "display": {
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    "scale": "linear -1 to +1 shared across all frames and variants",
    "normalization_excludes_source_radius_m": 0.004,
    "source_pixels_may_saturate": true,
    "fps": 15,
    "frame_count": 200,
    "poster_frame_index": 140,
    "poster_time_s": 2.633956470935107e-09,
    "frame_interpolation": false
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  "artifacts": [
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  "download": {
    "snapshot_frame_stride": 16,
    "description": "Every 16th actual movie frame, full spatial resolution; all probe samples",
    "full_arrays": "Regenerate with the script; full arrays remain in --output"
  }
}