A lot of Victorian era photos we’ve seen are always serious, so we have this prejudiced notion that people in the 1800s simply didn’t blend well with fun. Well, these pictures will show that it wasn’t always the case. Theories arise as to why Victorians constantly have dour-looking photos: 1) Lengthy exposure times made smiling […]
Alhazen's work extensively affected the development of optics in Europe between 1260 and 1650. The Book of Optics was translated into Latin by an unknown scholar at the end of the 12th (or the beginning of the 13th) century. The work was influential during the Middle Ages. It was printed by Friedrich Risner in 1572, as part of his collection Opticae thesaurus. This included a book on twilight falsely attributed to Alhazen, as well as a work on optics by Witelo.