mnemonic device
41Wu Xing — For other uses, see Wu Xing (disambiguation). Wu Xing Chinese 五行 Transcriptions Mandarin …
42Guido d'Arezzo — Guidonian /gwi doh nee euhn/, adj. /gwee daw dah rddet tsaw/, (Guido Aretinus) ( Fra Guittone ) c995 1049?, Italian monk and music theorist: reformer of musical notation. * * * born с 990, Arezzo? died 1050, Avellana? Italian music theorist. A… …
43Recursive acronym — A recursive acronym (synonymous with metacronym,[1] recursive initialism, and recursive backronym) is an acronym or initialism that refers to itself in the expression for which it stands. The term was first used in print in April 1986.[2]… …
44Cross product — This article is about the cross product of two vectors in three dimensional Euclidean space. For other uses, see Cross product (disambiguation). In mathematics, the cross product, vector product, or Gibbs vector product is a binary operation on… …
45North American Numbering Plan — NANPA redirects here. For other uses, see Nanpa (disambiguation). This article is about the numbering plan. For a list of area codes under the plan, see List of North American Numbering Plan area codes. The North American Numbering Plan (NANP) is …
46Decipherment of rongorongo — Tablet B Aruku kurenga, verso. One of four texts which provided the Jaussen list, the first attempt at decipherment. Made of Pacific rosewood, mid nineteenth century, Easter Island. (Collection of the SS.CC., Rome) There have been numerous… …
47GEMATRIA — (from Gr. γεωμετρία), one of the aggadic hermeneutical rules for interpreting the Torah ( , no. 29). It consists of explaining a word or group of words according to the numerical value of the letters, or of substituting other letters of the… …
48Key signature — For use in cryptography, see Key signature (cryptography). Key signature A major / F♯ minor with three sharps placed after the clef. In musical notation, a key signature is a series of sharp or …
49Tarot — The tarot (also known as tarocchi, tarock or similar names) is typically a set of seventy eight cards, comprised of twenty one trump cards, one Fool, and four suits of fourteen cards each ten pip and four face cards (one more face card per suit… …
50Rongorongo — Infobox Writing system name = Rongorongo type = Undeciphered time = Time of creation unknown, most tablets lost or destroyed in the 1860s languages = Assumed to be Rapanui sample = Rongorongo Qr3 7 color.jpg iso15924 = RoroRongorongo… …
