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jan 1, 138 - 地动仪

Description:

公元138年，张衡研制的候风地动仪观测到了陇西发生地震。

Fun fact：关于该地动仪的原型目前还存在争论，历史书上的模型图片被很多人指复原的不对。有人说这像广东的蟾蜍火锅。

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人类历史

7 months ago

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1525

Date:

jan 1, 138

Now

~ 1889 years ago

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