Category Archives: Optical Illusions

Blogcast #7: Dynamite Magazine Harry Houdini Punch-Out

By Tom Interval Dynamite magazine, issue #79, December 1980, features an article about Harry Houdini titled “HOUDINI: The Magic Man Who Knew Whodunit!” As part of that theme, the mag includes a companion two-piece punch-out that, when constructed, becomes a … Continue reading

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Blogcast #6: Houdini Optical Illusion on National Geographic Brain Games

By Tom Interval In 2013, National Geographic’s Brain Games commissioned artist Pete Fecteau to create a Rubik’s Cube mosaic of the Houdini two-face optical illusion I made that year. I wrote about it at the time, and that’s the subject … Continue reading

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Houdini Illusion Color-Changing Mug

By Tom Interval Okay, so you have to check out this mug—one of the coolest out there (see the 1 min. 49 sec. embedded video below). Yes, I’m a bit biased since I’m the one offering it on the Interval Magic CafePress … Continue reading

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Impossible Thingamabob

By Tom Interval It’s no Escher, but this optical illusion was fun to make. I based it on the well-known blivet, considered to be an indecipherable figure and impossible object whose perspective changes depending on how the brain perceives it. Hope you enjoy! Copyright … Continue reading

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