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Fitxategi:Perpetual Motion by Norman Rockwell.jpg

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Deskribapena
English: Cover of the October 1920 issue of Popular Science magazine, painted by American illustrator Norman Rockwell. It depicts an inventor working on a perpetual motion machine. The device shown is a "mass leverage" device, where the spherical weights on the right have more leverage than those on the left, supposedly creating a perpetual rotation, but there are a greater number of weights to the left, balancing the device.
Data
Jatorria Downloaded 2009-06-29 from Popular Science magazine, Vol.97, No.4 (October 1920), Bonnier Corp. New York, ISSN 0161-7370, front cover on Google Books
Egilea
Norman Rockwell  (1894–1978)  wikidata:Q271884 q:en:Norman Rockwell
 
Norman Rockwell
Bestelako izenak
Norman Perceval Rockwell; Norman Percevel Rockwell; Rockwell
Deskribapena margolari, ilustratzaile eta argazkilari US
Jaiotza/heriotza data 1894ko otsailaren 3a Edit this at Wikidata 1978ko azaroaren 8a Edit this at Wikidata
Jaiotza/heriotza lekua New York Stockbridge (Massachusetts)
Lan egindako lekua
Los Angeles; New Rochelle (New York); New York; Arlington (Vermont); Stockbridge (Massachusetts) Edit this at Wikidata
Autoritateen kontrol
creator QS:P170,Q271884
Lizentzia
(Fitxategi hau berrerabiltzen)		 Public Domain in USA - published before 1923 in USA

Lizentzia

Public domain
Public domain
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, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.
United States
United States
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), 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.

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oraingoa10:05, 14 abendua 201810:05, 14 abendua 2018 bertsioaren iruditxoa1.273 × 1.726 (769 KB)WowFile:Perpetual Motion by Norman Rockwell.jpg cropped 1 % horizontally, 1 % vertically using CropTool with precise mode.
03:03, 30 ekaina 200903:03, 30 ekaina 2009 bertsioaren iruditxoa1.286 × 1.744 (800 KB)Chetvorno{{Information |Description={{en|Cover of the October 1920 issue of ''Popular Science'' magazine, painted by American illustrator Wikipedia:Norman Rockwell. It depicts an inventor working on a perpetual motion machine.}} |Source=Downloaded [[2009-06-

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