Body & Soul4 mins ago
35 across
7 Answers
Optical toy in which partial pictures on either side of a card appear to merge when the card is rotated rapidly. T-A--O--O-E
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I was right the first time then, so your second O must be wrong
http://en.wikipedia.org/wiki/Thaumatrope
I was right the first time then, so your second O must be wrong
http://en.wikipedia.org/wiki/Thaumatrope