Category Archives: Houdini Two-Face Illusion

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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