The optical illusion is credited to Professor Joseph Jastrow, a pioneering psychologist, who used it to illustrate optional illusions in 1891.
It's sold as part of many magic kits to children.
- Presented as an optical illusion in Simple Conjuring Tricks by Will Goldston (1913)
- A kind of bet in 200 More Tricks You Can Do by Howard Thurston as Which Is Larger? (1927)
Variations of the shape
| This page incorporated content from Jastrow_illusion,
a page hosted on Wikipedia. Please consult the history of the original page to see a list of its authors. Therefor, this article is also available under the Creative Commons Attribution-ShareAlike License
Dayton, R. (1994). Fish Sticks. M-U-M, 83(September), 30–32.
de Courcy, K. (1997). A brief talk on the banana. Linking Ring, 77(1), 91–93.
Freer, Winston . (n.d.). Boomerang Fish. In Freer’s exclusive mysteries. Miracle Factory.
Ginn, D. (2010). Baffling boomerangs. Magicana, 57, 10–13.
Gower, H. (1962). Magic mudguards. Abracadabra, 33, 4–6.
Kleefield, J. (2008). Boomerang Teach-In. Linking Ring, 88(5), 84–85.
Pecor, C. J. (2001). The boomerangs revisited. Linking Ring, 81(5), 108–109.
Price, D. (2000). Color changing boomerangs. M-U-M, 89(May), 36–38.