On 5/14/2008 5:16:59 PM, Tom_Gutman wrote:
And you
>can always choose specific
>units (whether or not standard
>-- pi is often a useful unit)
>for any specific display by
>using the units placeholder.
>__________________
>� � � � Tom Gutman
For the pedants. (and Tom already knows this anyway;-)
You may have though pi as unitless, becaue it isn't in kg or metres but is 'just' a number.
The pedant notes that metres are of dimension 'Lenght'and kg are of dimension 'mass'.
To report a value one must scale it to be 'counted' using the local customary measure for that dimension, a scaling factor. The particular 'scaling factor' that resuklts in teh answwer 1, that is 'unity' is obviousl the "Unit".
So commonly we may want to know, relative to pi, how many of the thing we have. Hence puting pi inti the results place holder does that scaling.
We can also have, say, Tonne, relative to a mass dimension (internally in kg) doing the autoscaling factor, to give answers countes in those very same Tonnes.
Thus we have the pedants disctinction between "Units" and "Dimesions". But we know everyone just puts all these concepts into the same "Units & Dimensions" bag and gives them a good shake ;-)
There is much more of this for the true pedant. but that is enough for (k)now.
Philip Oakley