{
  "schema": "physics-anim-scene",
  "version": 1,
  "pixelsPerMeter": 1000,
  "gravityAcceleration": 9.8,
  "coulombK": 8987551792.3,
  "timeScale": 0.5,
  "canvasBackground": {
    "mode": "coordinate",
    "origin": {
      "x": 0,
      "y": 0
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  },
  "view": {
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    "y": 20,
    "scale": 0.8
  },
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    {
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      "type": "RichTextEditor",
      "state": {
        "pos": {
          "x": 540,
          "y": 65
        },
        "locked": true,
        "width": 1020,
        "height": 106,
        "text": "**观察三棱镜对白光的色散**\n等边三棱镜，顶角 60°；白光含 430–650 nm 的可见光，红、紫光的偏折不同。",
        "fontSize": 16,
        "fontWeight": 400,
        "lineHeight": 1.5,
        "padding": 16,
        "backgroundColor": "#ffffff",
        "backgroundOpacity": 0.96,
        "textColor": "#17324d",
        "borderColor": "#cbd5e1",
        "borderWidth": 1,
        "cornerRadius": 8,
        "showBorder": true
      }
    },
    {
      "id": 1,
      "type": "WhiteLightSource",
      "state": {
        "pos": {
          "x": 150,
          "y": 320
        },
        "locked": false,
        "mode": "single",
        "angleDeg": 0,
        "enabled": true,
        "alpha": 0.9,
        "spectrumCount": 31,
        "adaptiveSampling": false,
        "maxBounces": 6,
        "maxDistance": 2000,
        "showVirtualAssist": false
      }
    },
    {
      "id": 2,
      "type": "TriangularPrism",
      "state": {
        "pos": {
          "x": 500,
          "y": 320
        },
        "locked": false,
        "width": 240,
        "height": 207.84609690826528,
        "angleDeg": 20,
        "nGlass": 1.52,
        "nAir": 1,
        "dispersion": 0.06
      }
    },
    {
      "id": 3,
      "type": "OpticalScreen",
      "state": {
        "pos": {
          "x": 880,
          "y": 595
        },
        "locked": false,
        "length": 330,
        "angleDeg": 90,
        "color": "#17324d",
        "showHits": true,
        "hitRadius": 2,
        "blocksRays": true
      }
    },
    {
      "id": 4,
      "type": "Ruler",
      "state": {
        "pos": {
          "x": 940,
          "y": 595
        },
        "locked": true,
        "length": 330,
        "thickness": 30,
        "angleDeg": 90,
        "unit": "cm",
        "minorStep": 0.1,
        "majorEvery": 50,
        "showTicks": true,
        "showNumbers": true,
        "showMeasure": false,
        "showEntityMarkers": false,
        "commonGraduation": false,
        "fillColor": "#f1f5f9",
        "strokeColor": "#64748b"
      }
    },
    {
      "id": 91,
      "type": "RichTextEditor",
      "state": {
        "pos": {
          "x": 215,
          "y": 236
        },
        "locked": true,
        "width": 275,
        "height": 75,
        "text": "**白光入射**\n保持光源、棱镜位置不变",
        "fontSize": 16,
        "fontWeight": 400,
        "lineHeight": 1.5,
        "padding": 16,
        "backgroundColor": "#ffffff",
        "backgroundOpacity": 0,
        "textColor": "#17324d",
        "borderColor": "#cbd5e1",
        "borderWidth": 1,
        "cornerRadius": 8,
        "showBorder": false
      }
    },
    {
      "id": 92,
      "type": "RichTextEditor",
      "state": {
        "pos": {
          "x": 430,
          "y": 525
        },
        "locked": true,
        "width": 370,
        "height": 155,
        "text": "**记录列**\n屏的位置｜红光位置｜紫光位置\n光谱宽度 = 两端光斑的位置差\n\n只移动光屏，比较光谱宽度。",
        "fontSize": 16,
        "fontWeight": 400,
        "lineHeight": 1.5,
        "padding": 16,
        "backgroundColor": "#ffffff",
        "backgroundOpacity": 0.96,
        "textColor": "#17324d",
        "borderColor": "#cbd5e1",
        "borderWidth": 1,
        "cornerRadius": 8,
        "showBorder": true
      }
    },
    {
      "id": 93,
      "type": "RichTextEditor",
      "state": {
        "pos": {
          "x": 540,
          "y": 844
        },
        "locked": true,
        "width": 1020,
        "height": 126,
        "text": "**对照操作**\n将棱镜的色散强度暂设为 0，观察屏上的各色光是否重合；恢复 0.06 后再次观察。\n单束几何光线用于比较传播方向与落点；屏上的颜色不代表真实光谱的亮度分布。",
        "fontSize": 16,
        "fontWeight": 400,
        "lineHeight": 1.5,
        "padding": 16,
        "backgroundColor": "#ffffff",
        "backgroundOpacity": 0.96,
        "textColor": "#17324d",
        "borderColor": "#cbd5e1",
        "borderWidth": 1,
        "cornerRadius": 8,
        "showBorder": true
      }
    }
  ]
}