File:Roy 1777 Plate 18 Triangulation of Snowdon and Moel Eilio philosophicaltra6717roya 0847.jpg
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Triangulation of Snowdon and Moel Eilio
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English: Plan of the triangles made use of for obtaining the geometrical distance and altitude of snowdon and Moel Eilio with respect to the sea at Carnarvon (Caernarfon). From: Roy, William (1777). "Experiments and observations made in Britain, in order to obtain a rule for measuring heights with the barometer". Philosophical Transactions of the Royal Society of London 67: 653-787.
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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. | |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:53, 11 October 2023 | | 4,130 × 3,170 (1.82 MB) | Kognos (talk | contribs) | Uploaded a work by Roy, W. (William) 1726-1790 from https://www.biodiversitylibrary.org/item/211503#page/845 with UploadWizard |
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