"Fritz et Paul", Optical Illusion 1850-1900
"Fritz et Paul", Optical Illusion 1850-1900
Enamelled metal optical novelty inside paper packet bearing instructions, possibly manufactured in Germany and then sold in France.
‘Fritz’ and ‘Paul’, or “Les 2 Piccolos”, are the names given to the two flat metal figures (8 x 4 cm) in this optical illusion. Whenever you put one next to the other, the piccolo in front always looks bigger despite them being the same size.
It is unclear why this optical illusion was in Henry Wellcome’s medical collection. It may have been used as a diagnostic visual test to explore why people perceive the same thing differently.
The paper packet has tear and wear
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