Euler's Eyes
2026-10-14
History of Mathematics
Page 103 of 191
Image credits for Sophie Germain
Historical images and photos
All come from Wikimedia Commons. We use the thumbnails provided by Commons; the portrait was only converted from PNG to JPEG.
- Portrait of Sophie Germain, drawing by Berthe Chégaray of a medal in her memory, published in 1896: source page · public domain.
- Figures from the Research on the Theory of Elastic Surfaces, Sophie Germain, 1821, copy in the ETH-Bibliothek Zürich: source page · public domain.
- Chladni plate excited by a bow, engraving from 1879: source page · public domain.
- Grave in the Père-Lachaise cemetery, photo by Pierre-Yves Beaudouin, 2015: source page · CC BY-SA 4.0.
Blog figures
The cover, the nodal lines of a square plate and the drawing of the curvatures of the sphere, cylinder and saddle are original illustrations. The nodal lines were computed with the simplified model described in the text and do not reproduce photos of real plates.
Record
The file data/germain_imagens.json records the source, licence, verification date and SHA-256 hash of each downloaded image. The historical sources for each topic appear at the end of each post.