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Magic Trick Using Light Sensors

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Uploaded by on Feb 20, 2009

This is a demo of a basic light sensor circuit. In this example, I'm using 3 photoresistors concealed under a semi-transparent cloth. At the beginning of the trick a chalice covers each photoresistor. When a chalice is lifted, light activates the underlying sensor. The corresponding LED is lit up and the magician can identify the chalice.

By Stacey Kuznetsov
stace@cs.cmu.edu
http://staceyk.org

Starring Jen Marlow, Iris Howley, Stephen Oney

For Making Things Interactive Spring '09

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  • make yourself disappear!...........:)

  • hey! That ain't a photo of Harry Potter! That's a guy from.. Lord of the Rings... right?

  • just so everyone knows, many magic these days are based on technology eg. some use the iphone. well, the mystery of magic is destroyed. Just like wrestling shows.

  • ............. i could do without the costumes and the weird sounds

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