shall we say "spectra" is more general then ? since monocinetic measurements are never perfectly mono ?
daniel Radovan Cerny <radovan.ce...@unige.ch> a écrit : > For single energy (single wavelength) experiment the correct term is > "diffraction pattern". For multi energy (energy dispersive, ToF) > experiment, the correct term is "diffraction spectrum". > > From http://www.etymonline.com/ : > > pattern (n.) > 1324, "the original proposed to imitation; the archetype; that which > is to be copied; an exemplar" [Johnson], from O.Fr. patron, from M.L. > patronus (see patron). Extended sense of "decorative design" first > recorded 1582, from earlier sense of a "patron" as a model to be > imitated. The difference in form and sense between patron and pattern > wasn't firm till 1700s. Meaning "model or design in dressmaking" > (especially one of paper) is first recorded 1792, in Jane Austen. > Verb phrase pattern after "take as a model" is from 1878. > > spectrum > 1611, "apparition, specter," from L. spectrum "appearance, image, > apparition," from specere "to look at, view" (see scope (1)). Meaning > "band of colors formed from a beam of light" first recorded 1671. > Spectroscope (1861) is a hybrid, with Gk. -skopion, from skopein "to > look at, examine," which is from the same PIE root as spectrum. > specter > > > Radovan > > > Lubomir Smrcok a écrit : >> Spectrum: >> from Latin >spectrum< appearance, specter, from >specere< to look, look at >> >> >> Lubo >> >> >> On Thu, 11 Feb 2010, amar...@chimica.unige.it wrote: >> >>> Dear all, >>> >>> I see that in scientific literature (also in high-impact factor scientific >>> journals) the diffraction patterns are often referred to as diffraction >>> spectra. But we all know that diffraction is not a spectroscopic technique. >>> Should we pay more attention on this aspect when we write or refer a paper? >>> What about? >>> >>> Best regards, >>> Alberto >>> >>> >>> >>> > > > -- > Radovan Cerny > Laboratoire de Cristallographie > 24, quai Ernest-Ansermet > CH-1211 Geneva 4, Switzerland > Phone : [+[41] 22] 37 964 50, FAX : [+[41] 22] 37 961 08 > mailto : radovan.ce...@unige.ch > URL : http://www.unige.ch/sciences/crystal/cerny/rcerny.htm > > > ---------------------------------------------------------------- Ce message a ete genere avec le webmail Horde-IMP de l'ENSICAEN.
