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File:SuSongClock1.JPG

Description
English: Su Song's Water Clock (?).

This picture is a scaled model of Su Song's water-powered clock tower.
The original clock tower was 35 feet tall. It was a 3 story tower with an armillary sphere on the roof, and a celestial globe on the third floor.

This picture was taken in July 2004 from an exhibition at Chabot Space & Science Centre in Oakland, California. The quality of the picture is not ideal because flash photography was not allowed.
Date 12 July 2004 (original upload date)
Source Originally from en.wikipedia; description page is/was here.
Author Original uploader was Kowloonese at en.wikipedia
Permission
( Reusing this file)

GFDL-WITH-DISCLAIMERS; released under the GNU Free Documentation License.

Licensing

GNU head 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.
Subject to disclaimers.
w:en:Creative Commons
attribution share alike		 This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. Subject to disclaimers.
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work).
  • share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.
This licensing tag was added to this file as part of the GFDL licensing update.
The following pages on Schools Wikipedia link to this image (list may be incomplete):

Metadata

This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified file.
Camera manufacturer SONY
Camera model CYBERSHOT
Exposure time 1/30 sec (0.033333333333333)
ISO speed rating 320
Date and time of data generation 12:41, 10 July 2004
Lens focal length 8 mm
Orientation Normal
Horizontal resolution 72 dpi
Vertical resolution 72 dpi
Software used ACD Systems Digital Imaging
File change date and time 19:44, 28 July 2011
Y and C positioning Centered
Exposure Program Normal program
Exif version 2.2
Date and time of digitizing 12:41, 10 July 2004
Exposure bias 0
Maximum land aperture 3 APEX (f/2.83)
Metering mode Pattern
Light source Unknown
Flash Flash did not fire
DateTime subseconds 46
Colour space sRGB
Custom image processing Normal process
Exposure mode Auto exposure
White balance Auto white balance
Scene capture type Standard

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