Vaughan Pratt is a Professor Emeritus at Stanford University, who was an early pioneer in the field of computer science. Since 1969, Pratt has made several contributions to foundational areas such as
Vaughan Pratt
An ambigram is a calligraphic composition of glyphs that can yield different meanings depending on the orientation of observation. Most ambigrams are visual palindromes that rely on some kind of symme
Vaughan Pratt
…Sun and returning to Stanford in 1985. He also designed the Sun Microsystems logo, which features four interleaved copies of the word "sun"; it is an ambigram. Pratt became professor emeritus at Stanford in 2000…
Sator square (word square and palindrome) with the letters S and N in mirror writing.
Rotational ambigram Puzzle / The end by Peter Newell designed in 1893.
Mirror ambigram ΝΙΨΟΝ ΑΝΟΜΗΜΑΤΑ ΜΗ ΜΟΝΑΝ ΟΨΙΝ (Wash your sins, not only your face, in Ancient Greek) in the monastery Panagia Malevi [el].
Ambigrams published in The Strand Magazine, June 1908.