since the eye is more sensitive to errors of treatment
Plate 19 (cropped from page, levels untouched)
5. Section of film exposed to λ 5461, developed with pyrogallic acid.
6. Film developed one minute with pyrogallic acid.
7. Film developed 15 minutes with pyrogallic acid.
8. Film stripped and developed from both sides.
9. Film developed with gydroquinone.
10. Bathed plate.
11. White (short exposure).
12. Four wave lengths: λ 6430. 5780. 5461. 5086.
13. Heterogeneous green light; napthol green color-screen.
ex Herbert E(ugene) Ives (1882-1953 *). “An Experimental Study of the Lippmann Color Photograph.” The Astrophysical Journal 27:5 (June 1908) : 325-352
University of Michigan copy, digitized December 15, 2008
same paper is found as an offprint (and submitted as a dissertation, Johns Hopkins University (June 1908)), opening to same Plate in Google scans of Michigan and Harvard copies,
both also available via internet.archive
“since the eye is more sensitive to errors of treatment where color occurs.” p 345
another instance, of the visual abstractions daily encountered by scientists in the late 19th and early 20th centuries.
aesthetics of technical images; color; optics; H. E. Ives, “An Experimental Study of the Lippmann Color Photograph” (1908)