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  • 21 Aug, 2019

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File:EastHanSeismograph.JPG
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04:08, 12 July 2004 |480 × 585 (87 KB) | Kowloonese (talk | contribs) | Ancient Chinese Siesmograph from Eastern Han Dynasty

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inception

July 2004

exposure time

0.03333333333333333333 second

focal length

8 millimetre

media type

image/jpeg

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Date/TimeThumbnailDimensionsUserComment
current13:10, 10 January 2014Thumbnail for version as of 13:10, 10 January 2014480 × 552 (232 KB)SoerfmLevels, crop
13:10, 10 January 2014Thumbnail for version as of 13:10, 10 January 2014480 × 552 (232 KB)SoerfmLevels, crop
14:33, 25 March 2005Thumbnail for version as of 14:33, 25 March 2005480 × 585 (87 KB)ShizhaoA 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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