Wikimedia Commons

File:Clock Tower from Su Song's Book desmear.JPG

Original file ‎(908 × 1,366 pixels, file size: 661 KB, MIME type: image/jpeg)

Captions

Captions

The water-powered mechanism of Su Song's astronomical clock tower

Summary

edit
Description
English: File:Clock_Tower_from_Su_Song's_Book.JPG with smear removed by mixing channels:
  • Red: 0.2 green + blue
  • Green: 0.4 green + 0.65 blue
  • Blue: blue
as red is badly smeared, green is slightly smeared but has least noise, and blue is not smeared but has most noise.
Date
Source File:Clock_Tower_from_Su_Song's_Book.JPG
Author Su Song

Licensing

edit
Public domain

This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current12:50, 14 July 2015Thumbnail for version as of 12:50, 14 July 2015908 × 1,366 (661 KB)Cmglee (talk | contribs)User created page with UploadWizard

You cannot overwrite this file.

The following page uses this file:

File usage on other wikis

The following other wikis use this file:

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.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Clock_Tower_from_Su_Song%27s_Book_desmear.JPG&oldid=862252076"