Cantor lectures on recent advances in photography (1882)
Abney, William de Wiveleslie, Sir, 1843-1920, author, Society for the Encouragement of Arts, Manufactures, and Commerce (Great Britain) · London : Printed by William Trounce · leaf 17
y bright a show you, because people often complain that their photographic studios are not safe certain amount of blue light comes through as to light, and that they use ruby glass the glass ; I can see a trace of yellow, and a trace of green. Now I will take the yellow and get foggy plates. I have… … 1. Cobalt glass. 7. Bottle green. 4. Magenta. 2. Ruby glass. 5. Flashed orange. 8. Aurine. 3. Chrysoidine. 6. Stained red glass. 9. Quinine. but you will never get rid of blue light entirely. though not with the ruby glass which lets Of course it diminishes with every thickness blue light through.…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
