1292(or_earlier)_roger_bacon_-_image006.jpg
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Summary
| Description |
English:
Three-tiered camera obscura, 13th century (attributed to Roger Bacon)
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| Date | 13 th century |
| Source | http://www.bonnerweb.de/bilder/pinhole/sonnentaler/sonnentalerdateien/image006.jpg |
| Author | Roger Bacon? |
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. | |