Gene Mechtly wrote in USMA 11116: >On Sat, 17 Feb 2001, James R. Frysinger wrote: > >> ...the year isn't even *currently* accepted for use, unlike the >> hectare. > Let's be accurate, Jim. > The "year" is listed in Table 6, "accepted for use" with SI, >with no stated limitations or qualifications. > The "hectare" is listed in Table 8, with deprecation by the word >"currently" accepted, and by the constraint "...use is not encouraged." > There are things I would like to change in the official SI also >if I had the clout to do so. e.g. All prefix symbols for multiples greater >than one are uppercase symbols. They are: D, H, K, M, G, T, P, E, Z, and Y. > Help sell that improvement to members of the CIPM. >Gene. I can not find the "year" in Table 6 of my copy the BIPM bible, 7th Edition 1998. The introduction of Table 8 also says: "Table 8 lists some oher non-SI units which are currently accepted for use with the SI to satisfy the needs of commerccial, legal and specialized scientific interests." 1 000 000 m2 = 1 km2. This is an inconviently large step. I agree with Gene about D, H, and K. Joseph B. Reid 17 Glebe Road West Toronto M5P 1C8 Tel. 416 486-6071
