Re: [Phys-L] unit for "pure ratio"

[Todd Pedlar <pedlto01@luther.edu>]

Not sure I see the utility of inventing some sort of unit for dimensionless
numbers.  As Marty notes, this will lead to far more confusion than not,
and solves a problem that really doesn't exist.

On Sun, Jul 24, 2016 at 8:11 AM, Marty Weiss <martweiss@comcast.net> wrote:

> There’s another aspect to this pertaining to the final unit after you have
> done the math.  For example using the coefficient of friction in the
> calculation yields a force which is in Newtons.  Ff = “mu" (x) Fnormal
>  But calling the “mu” with the unit “perun" will give the final answer
> perun-Newtons which doesn’t make any sense.  If you leave the perun unit
> out then why have it at all?
>
>
>
>
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-- 
Todd K. Pedlar
Associate Professor of Physics
Luther College, Decorah, IA
pedlto01@luther.edu