vaso@mips.COM (Vaso Bovan) (10/30/89)
In article <1989Oct29.174631.12960@ux1.cso.uiuc.edu> mcdonald@aries.scs.uiuc.edu (Doug McDonald) writes: >>> >>>I would like to measure changes at least as small as >>>10 gammas (.001 Gauss), and if possible, even smaller. >>> >> >>? You mean of course, nanotesla (nT), since 1954. :-) > >I have been in the science business for over 20 years and have >never heard anyone refer to magnetic fields in Tesla - everyone >uses gauss. It is true that people know that someone somewhere >created a unit of magnetic field called a Tesla, but no one >remembers how many gauss are in one Tesla, and no one uses it. >Sometimes it might appear in a textbook (usually directed at >freshmen or sophmores - more advanced books use gauss). > >There are lots of names of units out there that are simply not used. > There are too many units out there that ARE being used. That is the reason various international technical standardization organizations has strived for a minimal set of clearly defined units. Unfortunately, there are many authors who insist on dragging their feet on the changeover, so that one often sees, for instance cgs and SI metric units intermingled, even within the same equation ! I note that refereed journals usually require SI metric, but allow obsolete cgs units "where traditional." This is an unfortunate loophole. I'm an electrical engineer. I have to deal today with gauss, tesla, and microns, all to describe the same parameter. (I won't even mention the profusion of inch-based electro-magnetic units which are STILL found in new textbooks). Let's not even start on the disgraceful reluctance of certain sectors of U.S.A. engineering, mechanical engineers in particular, to expedite conversion to metric measure.
mac@harris.cis.ksu.edu (Myron A. Calhoun) (10/30/89)
In article <30329@buckaroo.mips.COM> vaso@mips.COM (Vaso Bovan) writes: [many lines deleted] >.... I have to deal today with gauss, tesla, and microns,.... Someone once referred to the USA's "solution" to this problem as "INCHING OUR WAY TO THE METRIC SYSTEM"! --Myron -- Myron A. Calhoun, PhD EE, W0PBV, (913) 532-6350 (work), 539-4448 (home). INTERNET: mac@ksuvax1.cis.ksu.edu BITNET: mac@ksuvax1.bitnet UUCP: ...{rutgers, texbell}!ksuvax1!harry!mac
schaper@pnet51.orb.mn.org (S Schaper) (10/31/89)
Forsooth, sirrah, no goode Englishman will ever use that cursed Frog
gibberish!
:-)
UUCP: {amdahl!bungia, uunet!rosevax, chinet, killer}!orbit!pnet51!schaper
ARPA: crash!orbit!pnet51!schaper@nosc.mil
INET: schaper@pnet51.cts.com