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صورة:Archimedes screw.JPG


Description

Archimedes' screw. Public domain, from Chambers's Encyclopedia (Philadelphia: J. B. Lippincott Company, 1875). Added to illustrate article en:Archimedes.
Source

Originally from en.wikipedia; description page is/was here.
Date

2007-06-18 (original upload date)
Author

Original uploader was Ianmacm at en.wikipedia
Permission
(Reusing this image)

PD-US. PD-OLD

License information

 This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1923. See this page for further explanation.

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This image might not be in the public domain outside of the United States (this especially applies in Canada, China (not Hong Kong, Macao, or Taiwan Area), Germany, Mexico, and Switzerland). The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.
Public domain This image (or other media file) is in the public domain because its copyright has expired.

This applies to the United States, Canada, the European Union and those countries with a copyright term of life of the author plus 70 years.

Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Côte d'Ivoire has a general copyright term of 99 years and Honduras has 75 years, but they do implement that rule of the shorter term.

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Original upload log

(All user names refer to en.wikipedia)

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