File:PSM V03 D017 Constitution of air waves.jpg

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Description

Constitution of air waves

Date

between 1872 and 1873

Source

Popular Science Monthly Volume 3

Author

Unknown author

Permission
(Reusing this file)

	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. You must also include a United States public domain tag to indicate why this work is in the public domain in the United States. Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 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. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).
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	Date/Time	Thumbnail	Dimensions	User	Comment
current	15:14, 26 June 2010		1,443 × 598 (87 KB)	Ineuw	{{Information \|Description = Constitution of air waves \|Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_3.djvu/17 \|Date = 1872-1873 \|Author = Unknown \|Permission = {{PD-old}} \|other_versions = }} {{GFDL-user-w\|en\|Wikisour

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