Tony Duell wrote:
> [1] If I want to name the unit of length that's 1/1000 of a metre I call
> it a millimetre. But if I want one thousandth of the standard unit of
> mass, I don't call it a millikilogram :-).
> > Also the kilogramm is, AFAIR, the last of the basic units which
> > still relies on a prototype and has no definition on some nature
It does so! Just the basic unit of nature they picked was not a real
basic unit - it was the earth! The meter was something like 1/10,000,000
the Earth's curumfrence going thru Paris and the North and South poles.
The Kilogram's (derived from the meter ) volume was filled with water
and thus you got a unit weight.
--
Ben Franchuk - Dawn * 12/24 bit cpu *
www.jetnet.ab.ca/users/bfranchuk/index.html
Received on Sat Apr 20 2002 - 14:43:15 BST