Colored Shadows

From: John Gobel (
Date: Thu Nov 29 2001 - 15:07:10 PST

I saw this exhibit at the St. Louis Science Center a number of years ago. As I recall, all three lights remained on, and as you walked in front of them, your shadow changed color. The article seems to imply that you need to turn off at least one of the lights for that to happen. Is that the case???

Thank you,
John Gobel

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