File:Hering Color Cricles.png
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Summary
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English: Ewald Hering's color circles illustrating his primary colors as opponents (red vs. green and blue vs. yellow). The diagram shows how each primary can be mixed with each of the other pair but not its opponent color. |
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Original publication: Grundzüge der Lehre vom Lichtsinn Springer Berlin Heidelberg, 1920 - Psychology - 296 pages |
| Author |
Ewald Hering |
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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, 1930.
 Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country. Note: This tag should not be used for sound recordings. |
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 100 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, 1930. |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | |
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