Engraving depicting a vortex box used for studying smoke rings. Tin with hole in one end, containing smouldering paper, with piece of paper stretched tightly across the other end. Dated 19th Century

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Size: 5632px × 3724px
Location:
Photo credit: © World History Archive / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 19th, archival, archive, box, century, engraved, engraving, historical, history, illustrated, illustration, paper, physics, ring, rings, science, scientific, smoke, smouldering, study, studying, tin, vortex