OT: Alien Media (was Disasters and Recovery)

From: Dave Dameron <ddameron_at_earthlink.net>
Date: Thu Jan 21 09:44:39 1999

At 11:52 AM 1/21/99 -0500, you wrote:
>It was thus said that the Great Philip.Belben_at_pgen.com once stated:
>>
>> 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).
>
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
Received on Thu Jan 21 1999 - 09:44:39 GMT