Across
- 3. Is between 1500 and 150 years old
- 6. The first recorded discovery that a certain chemical turned black when exposed to the light was made in
- 7. Who figured out even longer ago than the 1500s
- 10. When were portable versions of the camera obsura developed
- 11. The first printed photographs were made between
- 13. Was the first stage of photography's evolution in Europe
- 14. Discovered that ammonia would dissolve the silver chloride and leave the image intact
- 16. Obscura means dark
Down
- 1. What colour turns to sunlight
- 2. Emulsion on glass or pewter was exposed to light and then washed the plate with solvents
- 4. Latin for chamber
- 5. How long has photography been around?
- 8. Is there any one correct anwser
- 9. The basic design of the camera has been in use since the
- 12. Developed an emulsion or light
- 15. Caused the reaction to light