File:Karl Schwarzschild and Ejnar Hertzsprung (1909).jpg
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This is a file from the Wikimedia Commons. The description on its description page there is shown below.
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Summary
| Description |
English: Karl Schwarzschild (left) and Ejnar Hertzsprung in professorial gowns in front of the Göttingen Observatory building sometime in 1909. |
| Date | |
| Source | http://www.leosondra.cz/en/first-hr-diagram/ |
| Author | The Göttingen Observatory photo, courtesy Hartmut Grosser. |
Licensing
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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
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 21:03, 29 November 2015 | 768 × 1,088 (57 KB) | Melirius | Better resolution from ''John B. Hearnshaw'' The Analysis of Starlight: Two Centuries of Astronomical Spectroscopy, Cambridge University Press, 2014, ISBN 1107031745, 9781107031746, p. 129. |
File usage
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