File:EastHanSeismograph.JPG
EastHanSeismograph.JPG (480 × 552 pixels, file size: 232 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 13:10, 10 January 2014 | 480 × 552 (232 KB) | Soerfm | Levels, crop | |
13:10, 10 January 2014 | 480 × 552 (232 KB) | Soerfm | Levels, crop | ||
14:33, 25 March 2005 | 480 × 585 (87 KB) | Shizhao | A replica of an ancient Chinese Siesmograph from Eastern Han Dynasty (25-220 CE) This picture was taken in July 2004 from an exhibition at Chabot Space & Science Center in Oakland California. The plaque of the exhibit said: <b>Detecting a Quake</b> <br> |
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