Occult Literature
Comparative Spectra and Dark Absorption Lines
Four tall bands of light and dark markings stand side by side against a black field. Fine horizontal lines cut the brighter portions at different positions, with reference letters near the top and margin. The plate accompanies Ball’s discussion of spectrum analysis. Its repeated format lets the reader compare the distribution of lines across the four bands.
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Citation
Illustrator not identified. "Comparative Spectra and Dark Absorption Lines" [editorial title]. In The Story of the Heavens, Sir Robert Stawell Ball. New and revised 1905 edition, 1905, Cassell and Company, Limited. Source scan leaf 81. Lumitheca. /gallery/image/gallery-20261108-0138-0081
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Editorial title and description. Source details from the Library catalogue.
Descriptive title supplied for the visually reviewed historical illustration. The surrounding book presents the original author's interpretation.
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Cite this illustration
Illustrator not identified. Comparative Spectra and Dark Absorption Lines. The Story of the Heavens. Scan leaf 81. Lumitheca. https://lumitheca.com/gallery/image/gallery-20261108-0138-0081