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File:Hertz-experiment.jpg

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Hertz-experiment.jpg (674 × 486 pixels, file size: 64 KB, MIME type: image/jpeg)

Description Dr. Hertz is using Multicounter
Date Taken on 30 June 1944
Source Ms. Barbara Hertz
Author Ms. Barbara Hertz


Public domain
This work is in the public domain because it was published in the United States between 1929 and 1963, and although there may or may not have been a copyright notice, the copyright was not renewed. For further explanation, see Commons:Hirtle chart and the copyright renewal logs.
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (70 years p.m.a.), Mainland China (50 years p.m.a., not Hong Kong or Macao), Germany (70 years p.m.a.), Mexico (100 years p.m.a.), Switzerland (70 years p.m.a.), and other countries with individual treaties.

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30 June 1944

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Date/TimeThumbnailDimensionsUserComment
current19:27, 18 February 2011Thumbnail for version as of 19:27, 18 February 2011674 × 486 (64 KB)Pooh4913This picture belongs to Ms. Hertz, and she is donating to the wikicommons.

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