Re: dimensionality


I mistakenly posted this to visad@xxxxxxxxxxxxxxxx, not realizing that
would exclude people at SSEC from seeing it, so here it is again, this
time posted to visad-list@xxxxxxxxxxxxx.


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cc:      visad@xxxxxxxxxxxxxxxx

> during my undergrad 'career' was a representation of quantity names
> using a 3-D matrix for powers (and inverse powers) of Length, Mass, and
> Time.  In each box, the "unit dimensional" quantity was shown (like:
>                  1  -2
>                 L  T 
>                    acceleration
> Not every box had a name, but the ability to relate to a quantity
> without introducing specific units systems was an extraordinary aid to
> dimensional analysis.  I would think this sort of thing would be
> critical when users start combining parameters with units attached.

Sort of like this figure from "Geometrical Dimensional Analysis":

(If you follow the links at the bottom of this page, you will learn
 everything there is to know about geometrical dimensional analysis, and
 then some ...).

For a nice planar view, see the NIST diagram of basic units and derived

(Maybe this is getting a little off-topic, but the pictures are cool.)

- --Russ

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