Researched
Photography
Daguerre (1839) and Talbot (1841) fix light-sensitive silver salts into lasting images; the camera becomes a scientific instrument.
Open in the interactive tree →Nicéphore Niépce made the first surviving photograph around 1826; Louis Daguerre announced his process in 1839 and William Henry Fox Talbot's negative-positive method followed in 1841. Photographic plates recorded star fields, spectra and X-rays, and let Becquerel discover radioactivity by accident. Roll film (Eastman, 1888) and cinema (1895) brought photography to everyone.
Prerequisites
- Glassmaking & Glassblowing~50 BC
- Achromatic Lens (Dollond)1758Early cameras needed achromatic lenses to give sharp images
- Modern Chemistry (Lavoisier)1789
Unlocks
- Forensics & Fingerprints1892
- Cinema1895
- Radioactivity1896
- Photolithography for Chips1955
- Integrated Circuit1958-1959Chip patterns are printed by photographic exposure of a photoresist