[racket] Numbers with dimensions

From: Hendrik Boom (hendrik at topoi.pooq.com)
Date: Mon Oct 28 07:06:59 EDT 2013

On Mon, Oct 28, 2013 at 07:54:22AM +0100, Konrad Hinsen wrote:
> Laurent writes:
>  > Indeed, the notion of dimension is not really what I was after. My intention was rather
>  > to provide a useful unit converter.
> Fair enough.
>  > If my current units are in N, and I multiply by square seconds, I
>  > think it's not always desirable for the measure to be automatically
>  > converted to m.kg.
> N/s^2 and m kg are the same unit, so there is nothing to convert. The normalized
> form in the SI system is m kg, so one could consider N/s^2 an alias for it.

It's a matter of language here, not physics.  N/s^2 and m kg may be the 
same units, but they are different words.

Kind of a matter of user-interfacing.

-- hendrik

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