Re: Kilogram constant defined in package System.Dim.Other_Prefixes (s-dmotpr.ads)

[Anh Vo <anhvofrcaus@gmail.com>]

On Tuesday, February 4, 2014 10:19:27 AM UTC-8, Ludovic Brenta wrote:
> Anh Vo <anhvofrcaus@gmail.com> writes: 
> > The Kilogram constants defined in package System.Dim.Other_Prefixes 
> > (s-dmotpr.ads) look different compared to others such as Meter, 
> > Second,... In addition, the values do not match with names in the 
> > comments on the right side. I would like to know why. By the way, the 
> > Meter, Kilogram and Second constant are repeated here for easy 
> > discussion.
>  
> Because the base SI unit for weight is not gram, it is kilogram.  This 
> explains the difference in exponents.  Also, in s-dimmks.ads, note how 
> the gram is defined:
>  
>    ug  : constant Mass := 1.0E-09;  -- micro (u) 
>    mg  : constant Mass := 1.0E-06;  -- milli 
>    cg  : constant Mass := 1.0E-05;  -- centi 
>    dg  : constant Mass := 1.0E-04;  -- deci 
>    g   : constant Mass := 1.0E-03;  -- gram 
>    dag : constant Mass := 1.0E-02;  -- deka 
>    hg  : constant Mass := 1.0E-01;  -- hecto 
>    Meg : constant Mass := 1.0E+03;  -- mega 
 
Thank you for your explanation. 

A. Vo