[Spectrum (superposed exposures by two different wave lengths)]
Photograph
[Spectrum (superposed exposures by two different wave lengths)]
1906–1908
Lippmann plate
Image: 1 9/16 × 1 in. (4 × 2.5 cm)
Overall (prism): 1 3/4 × 1 9/16 × 3/16 in. (4.4 × 4 × 0.5 cm)
Mount (glass): 2 1/2 × 1 1/4 in. (6.4 × 3.2 cm)
Other (housing): 6 3/4 × 4 3/4 × 5/8 in. (17.1 × 12 × 1.6 cm)
Gift of Mrs. Herbert E. Ives
1981.3015.0002
Inscriptions Insribed on envelope: Lippmann Plate \ 5 \ Made 1906-08 by Herbert E. Ives \ Super posed (sic) ["(sic)" has been crossed out] exposures by two different wave lengths
