{
  "meta": {
    "series": {
      "zh": "假如 · WHAT IF",
      "en": "WHAT IF"
    },
    "title": {
      "zh": "假如地球突然停止自转？",
      "en": "What if Earth stopped spinning?"
    },
    "style": "whatif",
    "voice": {
      "zh": "zh-CN-YunxiNeural",
      "en": "en-US-AndrewNeural"
    },
    "rate": {
      "zh": "+8%",
      "en": "+4%"
    },
    "langs": [
      "zh",
      "en"
    ],
    "handle": "@你的账号",
    "receipt": {
      "zh": "地球停转 · 账单",
      "en": "EARTH STOPS · RECEIPT"
    }
  },
  "facts": [
    {
      "id": "v",
      "zh": "赤道地面随地球自转的速度约 1,670 km/h（约 465 m/s）",
      "en": "Equator surface speed from rotation ≈ 1,670 km/h (≈ 465 m/s)",
      "calc": "2π × 6,378 km ÷ 23.93 h ≈ 1,674 km/h",
      "src": "NASA Space Place / IERS Earth radius"
    },
    {
      "id": "gust",
      "zh": "有记录以来最强阵风约 408 km/h（1996 年，澳大利亚巴罗岛，热带气旋奥利维亚）",
      "en": "Strongest recorded gust ≈ 408 km/h (Barrow Island, Australia, 1996, Cyclone Olivia)",
      "calc": "1,670 ÷ 408 ≈ 4.1",
      "src": "WMO Weather and Climate Extremes Archive"
    },
    {
      "id": "pistol",
      "zh": "常见 9 mm 手枪子弹出膛速度约 350–400 m/s",
      "en": "Typical 9 mm handgun muzzle velocity ≈ 350–400 m/s",
      "src": "Ammunition manufacturer specs (typical range)"
    },
    {
      "id": "day",
      "zh": "不自转时，一个太阳日等于绕太阳一圈：约半年白天、半年黑夜",
      "en": "Without rotation, one solar day equals one orbit: about six months of day, six of night",
      "src": "NASA / Odenwald, 'What would happen if Earth stopped spinning'"
    },
    {
      "id": "ocean",
      "zh": "离心力消失后，赤道隆起的海水流向两极，赤道附近露出一圈大陆",
      "en": "Without centrifugal force, the equatorial water bulge flows to the poles, exposing an equatorial continent",
      "src": "Witold Fraczek, ESRI (2008), 'Mean sea level, GPS, and the geoid'"
    },
    {
      "id": "lod",
      "zh": "潮汐让地球自转变慢，一天每世纪约变长 1.7 毫秒",
      "en": "Tides slow Earth's spin: the day lengthens by about 1.7 ms per century",
      "src": "Stephenson, Morrison & Hohenkerk (2016), Proc. R. Soc. A"
    }
  ],
  "lines": {
    "zh": [
      {
        "t": "假如地球，突然停止自转，会发生什么？",
        "scene": {
          "earth": {
            "spin": 1,
            "zoom": 1
          },
          "title": true
        }
      },
      {
        "t": "现在，站在赤道上的你，正跟着地球一起，以每小时一千六百七十公里的速度转动。",
        "fact": "v",
        "scene": {
          "earth": {
            "spin": 1,
            "zoom": 1.15,
            "marker": 1
          },
          "number": {
            "value": 1670,
            "unit": "km/h",
            "label": "赤道转速"
          }
        }
      },
      {
        "t": "地球突然刹车，你可停不下来。",
        "scene": {
          "earth": {
            "spin": 0,
            "zoom": 1.15,
            "marker": 1
          },
          "receipt": "open"
        }
      },
      {
        "t": "你会以每秒四百六十五米的速度向东飞出去，比很多手枪子弹还快。",
        "fact": "pistol",
        "scene": {
          "earth": {
            "spin": 0,
            "zoom": 1.15,
            "marker": 1,
            "fling": 1
          },
          "receipt": {
            "item": "向东飞出",
            "qty": "465 m/s"
          }
        }
      },
      {
        "t": "空气也停不下来，地面会刮起超过一千公里每小时的风，是有记录以来最强阵风的四倍。",
        "fact": "gust",
        "scene": {
          "earth": {
            "spin": 0,
            "zoom": 1.05,
            "wind": 1
          },
          "receipt": {
            "item": "全球超级大风",
            "qty": "×4 纪录"
          }
        }
      },
      {
        "t": "就算你活了下来，一天会变得和一年一样长：半年白天，半年黑夜。",
        "fact": "day",
        "scene": {
          "earth": {
            "spin": 0,
            "zoom": 1,
            "night": 1
          },
          "receipt": {
            "item": "1 天",
            "qty": "= 1 年"
          }
        }
      },
      {
        "t": "海水会涌向南北两极，赤道上露出一整圈巨大的新大陆。",
        "fact": "ocean",
        "scene": {
          "earth": {
            "spin": 0,
            "zoom": 0.86,
            "ocean": 1,
            "tilt": 0
          },
          "receipt": {
            "item": "新大陆",
            "qty": "×1 圈"
          }
        }
      },
      {
        "t": "好消息是，地球不会突然停下。",
        "scene": {
          "earth": {
            "spin": 1,
            "zoom": 1
          },
          "receipt": "void"
        }
      },
      {
        "t": "它只是在极慢地减速，每过一百年，一天大约变长一点七毫秒。",
        "fact": "lod",
        "scene": {
          "earth": {
            "spin": 1,
            "zoom": 0.92
          },
          "number": {
            "value": 1.7,
            "unit": "ms",
            "label": "每 100 年，一天变长",
            "dec": 1
          }
        }
      },
      {
        "t": "下一期，你想知道哪个“假如”？评论区告诉我。",
        "scene": {
          "earth": {
            "spin": 1,
            "zoom": 0.8
          },
          "outro": true
        }
      }
    ],
    "en": [
      {
        "t": "What if Earth suddenly stopped spinning?",
        "scene": {
          "earth": {
            "spin": 1,
            "zoom": 1
          },
          "title": true
        }
      },
      {
        "t": "Right now, if you're standing on the equator, you're moving with the planet at about one thousand six hundred seventy kilometres an hour.",
        "fact": "v",
        "scene": {
          "earth": {
            "spin": 1,
            "zoom": 1.15,
            "marker": 1
          },
          "number": {
            "value": 1670,
            "unit": "km/h",
            "label": "Equator speed"
          }
        }
      },
      {
        "t": "If Earth hits the brakes, you don't.",
        "scene": {
          "earth": {
            "spin": 0,
            "zoom": 1.15,
            "marker": 1
          },
          "receipt": "open"
        }
      },
      {
        "t": "You'd fly east at four hundred sixty-five metres per second. Faster than many pistol bullets.",
        "fact": "pistol",
        "scene": {
          "earth": {
            "spin": 0,
            "zoom": 1.15,
            "marker": 1,
            "fling": 1
          },
          "receipt": {
            "item": "Flung east",
            "qty": "465 m/s"
          }
        }
      },
      {
        "t": "The air keeps going too: winds over a thousand kilometres an hour, four times the strongest gust ever recorded.",
        "fact": "gust",
        "scene": {
          "earth": {
            "spin": 0,
            "zoom": 1.05,
            "wind": 1
          },
          "receipt": {
            "item": "Global superstorm",
            "qty": "×4 record"
          }
        }
      },
      {
        "t": "Survive that, and one day lasts a whole year: six months of daylight, six months of night.",
        "fact": "day",
        "scene": {
          "earth": {
            "spin": 0,
            "zoom": 1,
            "night": 1
          },
          "receipt": {
            "item": "1 day",
            "qty": "= 1 year"
          }
        }
      },
      {
        "t": "The oceans drain toward the poles, and a giant new continent rises around the equator.",
        "fact": "ocean",
        "scene": {
          "earth": {
            "spin": 0,
            "zoom": 0.86,
            "ocean": 1,
            "tilt": 0
          },
          "receipt": {
            "item": "New continent",
            "qty": "×1"
          }
        }
      },
      {
        "t": "The good news? Earth isn't going to stop.",
        "scene": {
          "earth": {
            "spin": 1,
            "zoom": 1
          },
          "receipt": "void"
        }
      },
      {
        "t": "It's only slowing down, very gently: every century, the day gets about one point seven milliseconds longer.",
        "fact": "lod",
        "scene": {
          "earth": {
            "spin": 1,
            "zoom": 0.92
          },
          "number": {
            "value": 1.7,
            "unit": "ms",
            "label": "longer day per century",
            "dec": 1
          }
        }
      },
      {
        "t": "Which what-if should I do next? Tell me in the comments.",
        "scene": {
          "earth": {
            "spin": 1,
            "zoom": 0.8
          },
          "outro": true
        }
      }
    ]
  }
}