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Boomerang Illusion

From Magicpedia, the free online encyclopedia for magicians by magicians.
Revision as of 23:44, 9 April 2016 by Pprevos (Talk | contribs) (References)

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The Boomerang Illusion (also known as the Jastrow Illusion) is an effect based on an optical illusion in which two boomerang shapes appear to shrink and grow.
The two figures are identical.

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.


Variations of the shape

  • Noses
  • Bananas
  • Rainbows
  • Fish


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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.