Category:Houfeng Didong Yi

Media in category "Houfeng Didong Yi"

The following 9 files are in this category, out of 9 total.

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  EastHanSeismograph.JPG 480 × 552; 232 KB
  
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  PSM V29 D320 Ancient chinese choko seismoscope from 136 a d.jpg 1,162 × 1,387; 249 KB
  
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  Seismograph IMG 5401.JPG 2,178 × 2,327; 923 KB
  
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  Sismografo chang heng.jpg 231 × 300; 14 KB
  
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  The Chinese Museum Calgary Alberta (10046526726).jpg 5,184 × 3,456; 7.31 MB
  
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  Wang Zhenduo's reprodution of Heng's seismoscope.png 450 × 302; 175 KB
  
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  Zhang Heng's seismometer internal reproduction with inverted pendulum.png 432 × 607; 256 KB
  
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  Zhang Heng's seismoscope.jpg 614 × 281; 59 KB
  
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  注释版地动仪复原.jpg 795 × 570; 61 KB