Euler's Eyes
2026-10-15
History of Mathematics
Page 180 of 191
Image credits
Historical images and photographs
All come from Wikimedia Commons. We use the thumbnails provided by Commons, unedited.
- Portrait of John Napier, unknown artist, 1616, National Galleries of Scotland: source page · public domain.
- Title page of the Mirifici logarithmorum canonis descriptio, 1614: source page · public domain.
- A page of the 1614 tables: source page · public domain.
- Title page of Briggs’s Arithmetica logarithmica, 1624, photo by Phidus: source page · CC BY-SA 4.0.
- Napier’s bones in the Whipple Museum, photo by Marsupium: source page · public domain.
- Merchiston Tower, photo by Kim Traynor: source page · CC BY-SA 3.0.
- Slide rule, photo by Jacek Halicki: source page · CC BY-SA 4.0.
Blog figures
The map, the journey graph and the interactive figures (the two progressions, the two points, Briggs’s scale, the bones and the slide rule) are original and work in every language of the site. The map uses OpenStreetMap data.
Record
The file data/napier_imagens.json records the origin, licence, verification date and SHA-256 hash of each downloaded image. The stops of the map are in data/viagens/napier.yaml. The historical sources for each topic appear at the end of each post.