Euler's Eyes
2026-10-14
Image credits
Historical images
All come from Wikimedia Commons. We use the thumbnails provided by Commons; the largest were reduced to 1,200 pixels wide, with no other editing.
- Portrait of Einstein in 1921, possibly by Herman Mishkin, used by the Nobel Foundation: source page · public domain.
- Einstein around 1904, in Bern, photo by Lucien Chavan: source page · public domain.
- Einstein at the National Museum, Rio de Janeiro, 7 May 1925, unknown author: source page · public domain.
- Einstein in the Botanical Garden of Rio de Janeiro, May 1925, unknown author: source page · public domain.
- The instruments of the expedition in Sobral, 1919, photo by Charles Davidson: source page · public domain.
- Plate of the 1919 eclipse, from the report by Dyson, Eddington and Davidson: source page · public domain.
Blog figures
The cover, the diagram of the light clock and the 2,000-step random walk are original illustrations, with versions in each of the site’s languages. The light-clock diagram was redrawn from a figure in this site’s old course on the theory of relativity, which is also the source of the examples of the astronaut and of the cosmic-ray particles. The random walk was generated by computer, with randomly drawn directions.
Record
The file data/einstein_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.
All topics on Albert Einstein · ← The legacy of Albert Einstein