Archived posting to the Leica Users Group, 2002/03/24
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At 2:12 PM -0800 3/24/02, Frank Filippone wrote:
>Europeons use the comma instead of the decimal point in numbers. At least
>it is a common thing to see. Suggest 10,000 metric Tonnes is really 10.000
>Tonnes , which is 10,000 KG or 22,000 pounds of glass. This is more
>consistent with the making of 10,000 -30,000 lenses per year.....rather than
>1000 times that amount.
>The Math:
>Figure a lens is half glass, half metal. Average of say 300g ( 3/4 of a
>pound of lens) .... then this becomes 3/8 pound of glass per lens. Say they
>grind off 1/3 of the glass. That would say the gross amount of glass per
>lens is 5/11 of a pound ... times 11,000 lenses ( make the math easy) is
>5,000 pounds of glass per 10,000 lenses...
Yes, but the subsequent math made it clear he used the comma in the
sense that N.America uses it, and was thinking of the volume of 1000
years production.
Which hasn't happened yet. :-)
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* Henning J. Wulff
/|\ Wulff Photography & Design
/###\ mailto:henningw@archiphoto.com
|[ ]| http://www.archiphoto.com
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