James Freysinger wrote in USMA 17885: >"Joseph B. Reid" wrote: >> >> James Freysinger wrote in USMA 17873: >.... >> >.... My Webster's Ninth New Collegiate Dictionary gives 1892 >> >as the date it [micron] was first used and interestingly it was one >>year later >> >that the Mendenhall Order was published. >.... >> The Shorter Oxford Dictionary dates birth of the micron as 1892 > > That's not terribly common for these dictionaries to agree on dates of >word origins. I suppose then that the term micron was coined at some >meeting, perhaps a CGPM meeting. > >Jim
The first CGPM was in 1889 and the third meeting was in 1901. I think it is more likely than the micron was defined at a meeting of the CIPM (Comit� International des Poids et Mesures). Joseph B.Reid 17 Glebe Road West Toronto M5P 1C8 TEL. 416-486-6071
