Illustration depicting a compass with optical entry points for light to cast shadows. Dated 19th Century

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Size: 13179px × 4774px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 19th, cast, century, compass, dated, depicting, direction, entry, illustrated, illustration, instruments, light, optical, points, scientific, shadow, shadows.