Engraving depicting a multi-prism spectrograph used at Potsdam observatory in the 1890s. Dated 20th century

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Size: 3668px × 5718px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 19th, 20th, archival, archive, century, engraved, engraving, historical, history, illustrated, illustration, multi-prism, observatory, potsdam, prism, science, spectrograph, technology