We enjoyed the article “Pepper's Ghost” by Thomas B. Greenslade Jr. in the September issue of TPT (p. 338), but we think that Fig. 3 from Cyclopaedic Science Simplified is oversimplified. Even with a naked eye one can see that angle a does not equal β. The green ray follows the correct path from the nose of the hidden lady to the eye of the spectator. The lower part of her robe cannot even be seen (blue).
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