On 2010/10/23, at 05:45 , John M. Steele wrote:
There are a few other errors too.
Pounds/acre to kg/ha should be 1.12 to stated number of figures
(1.120850) - close, but no cigar
Short tons/acre to kg.ha is off by 1000X (2241.7 kg/ha or 2.2417 t/
ha)
Dear John,
At the risk of being boring:
Oh how our minds we do pervert
When first we practice to convert!
When you choose direct metrication, the process of "metric conversion"
is simply not necessary. It may be fun for the numerically gifted but
it also delays metrication remarkably. See http://www.metricationmatters.com/docs/ApproachesToMetrication.pdf
and http://www.metricationmatters.com/metric_conversion.html
Cheers,
Pat Naughtin
Author of the ebook, Metrication Leaders Guide, see
http://metricationmatters.com/MetricationLeadersGuideInfo.html
Hear Pat speak at: http://www.youtube.com/watch?v=_lshRAPvPZY
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
for more metrication information, contact Pat at [email protected]
or to get the free 'Metrication matters' newsletter go to: http://www.metricationmatters.com/newsletter
to subscribe.
On 2010/10/23, at 05:45 , John M. Steele wrote:
There are a few other errors too.
Pounds/acre to kg/ha should be 1.12 to stated number of figures
(1.120850) - close, but no cigar
Short tons/acre to kg.ha is off by 1000X (2241.7 kg/ha or 2.2417 t/ha)
From: James R. Frysinger <[email protected]>
To: U.S. Metric Association <[email protected]>
Sent: Thu, October 21, 2010 3:27:27 PM
Subject: [USMA:48693] USDA non-SI to SI conversion chart
I was researching planting calendars when I stumbled across this:
http://www.usda.gov/news/pubs/fbook98/append.htm#chart
Obviously there is a lot of rounding off. And I found that there is
at least one error:
To convert this To this Multiply by
feet centimeters(cm) 39
A factor of 30 would have been closer; 30.5 would have been better
yet. The actual factor is 30.48 (exactly).
This seems to come from USDA fbook 98, whatever that is.
Jim
-- James R. Frysinger
632 Stony Point Mountain Road
Doyle, TN 38559-3030
(C) 931.212.0267
(H) 931.657.3107
(F) 931.657.3108
