File:EastHanSeismograph.JPG
EastHanSeismograph.JPG (480 × 552 pixels, file size: 232 KB, MIME type: image/jpeg)
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Summary
[edit]DescriptionEastHanSeismograph.JPG |
English: A replica of an ancient Chinese Seismograph from Eastern Han Dynasty (25-220 CE). This picture is taken from an exhibition at Chabot Space & Science Center in Oakland, California. The plaque of the exhibit said: Detecting a Quake In 132 CE, after several earthquakes in China, astronomer Zhang Heng invented this instrument to warn people of the next one. When the ground shook, it moved a pendulum inside the jug. The pendulum pushed a lever that opened one dragon's mouth. A ball rolled out and into the toad's mouth below, sounding an alarm. The open dragon mouth pointed in the direction of the earthquake, notifying the Emperor. |
Date | |
Source | en:File:EastHanSeismograph.JPG |
Author | en:user: Kowloonese |
Licensing
[edit]Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled GNU Free Documentation License.http://www.gnu.org/copyleft/fdl.htmlGFDLGNU Free Documentation Licensetruetrue |
This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. | ||
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This licensing tag was added to this file as part of the GFDL licensing update.http://creativecommons.org/licenses/by-sa/3.0/CC BY-SA 3.0Creative Commons Attribution-Share Alike 3.0truetrue |
Original upload log
[edit]Upload date | User | Dimensions | Comment
04:08, 12 July 2004 |480 × 585 (87 KB) | Kowloonese (talk | contribs) | Ancient Chinese Siesmograph from Eastern Han Dynasty
File history
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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 (talk | contribs) | Levels, crop | |
13:10, 10 January 2014 | 480 × 552 (232 KB) | Soerfm (talk | contribs) | Levels, crop | ||
14:33, 25 March 2005 | 480 × 585 (87 KB) | Shizhao (talk | contribs) | 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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Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Camera manufacturer | SONY |
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Camera model | CYBERSHOT |
Exposure time | 1/30 sec (0.033333333333333) |
F-number | f/2.8 |
ISO speed rating | 320 |
Date and time of data generation | 11:40, 10 July 2004 |
Lens focal length | 8 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Software used | Adobe Photoshop CS2 Windows |
File change date and time | 14:09, 10 January 2014 |
Y and C positioning | Co-sited |
Pair of black and white reference values |
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Exposure Program | Normal program |
Exif version | 2.2 |
Date and time of digitizing | 11:40, 10 July 2004 |
Meaning of each component |
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APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
Light source | Unknown |
Flash | Flash did not fire |
Supported Flashpix version | 1 |
Color space | sRGB |
File source | Digital still camera |
Scene type | A directly photographed image |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Scene capture type | Standard |
Supported Flashpix version | 1 |
Image width | 480 px |
Image height | 552 px |
Date metadata was last modified | 15:09, 10 January 2014 |
IIM version | 2 |