"shazzbat" wrote in message
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"Nick Maclaren" wrote in message
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In article ,
"shazzbat" writes:
|
| So for high precision science, what's the difference between an
American
| pound and a British pound?

I doubt that there is a single American pound, any more than there
is a single African one.

However, in the USA, a pound is a derivation of an Imperial pound and,
in the UK, a pound is a metric pound. Since about 1950.

So you're saying there are 2 pounds to the Kg, and not 2.2 then? That's a
bit more difference than " for practical purposes, not at all" You're not
as
sure as you were earlier are you?

Steve

They're now exactly the same. And have been since 1959
And all are defined by their metric equivalent.

quote

The pound (avoirdupois) or international pound, abbreviation "lb"
or sometimes # in the United States, is the mass unit defined as
exactly 0.45359237 kilograms (or 453.59237 grams). This definition
has been in effect since a 1959 agreement among the national standards
laboratories of the United States, Canada, the United Kingdom,
South Africa, Australia, and New Zealand.

http://www.ngs.noaa.gov/PUBS_LIB/Fed...doc59-5442.pdf


/quote

http://www.reference.com/browse/wiki/Pound


michael adams

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