21 Jan
1999
21 Jan
'99
1:44 a.m.
At 11:52 AM 1/21/99 -0500, you wrote:
It was thus said that the Great Philip.Belben(a)pgen.com
once stated:
I thought length, mass (Kilogram), and time (seconds) were picked as the
basic SI units, and others, like temperature, were "secondary". For
electromagnetics,
a 4'th unit was required, sometimes an ampere (which can be defined from
mechanical variables), sometimes charge.
-Dave
I'd like to define it in terms of SI units, but the Kilogram is not too
easy (yet).
Really? The meter is defined (certain frequency of light from a certain
element for so many waves yada yada). Sea level is defined (don't know the
SI unit, but 780 millibars of pressure). Celcius is defined (0 is freezing
point of pure water at sea level, 100 boiling point of pure water at sea
level) and that's all you need to define the gram: one cubic centimeter of
water at 4C at sea level. That also gets you volume (liters).