On Sun, 14 Aug 2011, Asmus Freytag wrote: > The Ohm sign should have been encoded as another example of "squared" > letters and abbreviations. It comes from Asian character sets,
I’d say the ohm sign comes from the MacRoman character set (0xBD). http://www.unicode.org/Public/MAPPINGS/VENDORS/MICSFT/MAC/ROMAN.TXT Only recently was the mapping changed to capital omega. http://www.unicode.org/Public/MAPPINGS/VENDORS/APPLE/ROMAN.TXT The English spelling is “ohm”, not “Ohm”. Both symbols (micro sign, ohm sign) combine with Latin letters to form multiples of units: micrometre, megaohm; even microohm. Therefore I think one might well regard micro sign and ohm sign as some kind of “pseudo-Latin” letters.
