A Conversation for Ambigrams (sweJ6!qwe)
Martin Gardner
Bellman Started conversation Nov 3, 2001
I seem to remember a proto-ambigram in Scientific American in the mid 60's. It was talking about palidromes and introduced the concept of a rotational palindrome:
"NOW NO SWIMS ON MON"
reads the same when rotated through 180 degrees.
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Martin Gardner
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