> Octarine: > http://en.wikipedia.org/wiki/Octarine#Octarine > > and its position in the electromagnetic spectrum: > http://imgs.xkcd.com/comics/electromagnetic_spectrum.png They have missed out the very important range "Scientific Light" such as that that comes out of "Light Sources" such as the "Diamond light Source". This extends over the range of frequencies of roughly, in their nomenclature, Entertaining- to Exa, although one would not be at all surprised (but not for long at all) to find Zappa- frequency rays coming out of a Scientific Light source. Using more mundane descriptors that's about soft XRays through medium hard Gamma Rays with a possibility of extension well into "Sinister Google Projects". Light ain't what it used to be. Especially if you are "selling" a scientific "light source" to the public. Russell -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist