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Title: An engraving depicting Joseph von Fraunhofer
Caption: An engraving depicting Joseph von Fraunhofer (1787-1826), a German physicist who developed the spectrum and mapped the lines of the solar spectrum (Fraunhofer lines). Dated 19th century
Credit: Album / World History Archive
Image size: 3981 × 5268 px | 60.0 MB
Print size: 33.7 × 44.6 cm | 1567.3 × 2074.0 in (300 dpi)