Some are so entrenched that the SI Brochure accepts them: *Astronomical unit *Not sure what you mean by atomic energy units, but the electron volt is accepted *The kilowatt hour is debatable but it is a compound unit made from accepted units. NIST SP811 accepts it.
You should also include pre-SI outcasts from the early metric system: *calories, in all flavors, with big and little "c" *the concept of kilogram-force, in all manifestations including pressure (kg/cm²), energy and power (metric horsepower) *the entire cgs system (specifically, its derived units) *the micron There are other outcasts, but they don't seem entrenched (stere, abvolts, statvolts, the prefix myria-, etc) ________________________________ From: Pat Naughtin <pat.naugh...@metricationmatters.com> To: U.S. Metric Association <usma@colostate.edu> Sent: Sun, January 24, 2010 7:55:27 PM Subject: [USMA:46454] Too entrenched to change Dear All, I am beginning to make a collection of all those old pre-metric measuring words that are described as: Too entrenched to change. Here are some examples to get your thinking started (as you know, many of these have never been formally defined): astronomical units, atomic energy units, Baby birth mass in pounds and ounces, Dress sizes, Fahrenheit degrees, Human height in feet and inches, kilowatt-hours, Light-years, parsecs, R-factor, Shoe sizes. Cheers, Pat Naughtin Author of the ebook, Metrication Leaders Guide, that you can obtain from http://metricationmatters.com/MetricationLeadersGuideInfo.html PO Box 305 Belmont 3216, Geelong, Australia Phone: 61 3 5241 2008 Metric system consultant, writer, and speaker, Pat Naughtin, has helped thousands of people and hundreds of companies upgrade to the modern metric system smoothly, quickly, and so economically that they now save thousands each year when buying, processing, or selling for their businesses. Pat provides services and resources for many different trades, crafts, and professions for commercial, industrial and government metrication leaders in Asia, Europe, and in the USA. Pat's clients include the Australian Government, Google, NASA, NIST, and the metric associations of Canada, the UK, and the USA. See http://www.metricationmatters.com/ to subscribe.
