Euler's Eyes
2026-10-11
History of Mathematics
Page 51 of 191
Image credits
Historical images
The two historical images come from Wikimedia Commons and are in the public domain. We use the thumbnails provided by Commons, without editing.
- Portrait of Isaac Newton, Godfrey Kneller, 1689: source page · public domain.
- Title page of the Principia, 1687: source page · public domain.
Blog figures
The cover and the prism sketch are original illustrations. The interactive figures for the secant, the approximations of √2 and the orbits were created for this trail. They are teaching aids, not reproductions of manuscripts or simulations of Newton’s experiments.
Record
The file data/newton_imagens.json records the source, licence, verification date and SHA-256 hash of each downloaded image. The historical sources for each topic are listed at the end of each post.
Additional historical images
These images come from Wikimedia Commons. The source, licence and SHA-256 hash of each one are recorded in data/newton_imagens.json.
- Woolsthorpe Manor: DeFacto · Wikimedia Commons · CC BY-SA 4.0
- The apple tree at Woolsthorpe: David Smith · Wikimedia Commons · CC BY-SA 2.0
- Replica of the 1668 reflecting telescope: Science Museum Group · Wikimedia Commons · CC BY 4.0
- Title page of The Method of Fluxions (1736): Isaac Newton, tr. John Colson (1736) · Wikimedia Commons · public domain