On 2010/10/24, at 06:31 , m. f. moon wrote:
I recently bought a new mini maglite led flashlight marked with a
set of parameters labelled FL 1 Standard. These parameters were all
in metric and included "243 cd, 31 m, 9 lumens, 1 m" . I found by
google search FL 1 standard the new standard from NEMA which defines
all of this and more. Some surprise to me -- so look it up it is
interesting.
m moon
Thanks for the reference Marion,
I found this YouTube site to be a good explanation for the light unit
naive (like me): http://www.youtube.com/watch?v=aO_l5ciKsPg
It's not all metric but clearly they are heading in the right
direction. (But I was a bit worried about "light energy" being
measured and quoted in "lumens". When I think energy I think joules!)
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
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and government metrication leaders in Asia, Europe, and in the USA.
Pat's clients include the Australian Government, Google, NASA, NIST,
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