Magic lantern being used to project slides during a lecture on spectrum analysis at the Royal Polytechnic Institution, London. From John Henry Pepper "Cyclopaedic Science Simplified", London, 1873. Chromolithograph.

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Photo credit: © Photo12/Ann Ronan Picture Library / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: /, 1873., analysis, chemistry, chromolithograph., cyclopaedic, henry, institution, john, lantern, lecture, london, london., magic, pepper, physics, polytechnic, project, royal, science, simplified, slides, spectroscopy, spectrum