
Random Choice
WHAT TO DO
Look through the acrylic
cylinder at the words below. What
do you see? Does one word appear
to be up side down? Can you figure
out why?
HOW IT WORKS
Actually both words are up side down. The acrylic cylinder bends the light in such a way that the image is inverted. One word only appears to be right side up because each letter is symmetric. That is, an up side down C looks the same as a right side up C.