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Re: beginner question regarding units in equations

  • To: mathgroup at smc.vnet.net
  • Subject: [mg123939] Re: beginner question regarding units in equations
  • From: Richard Fateman <fateman at cs.berkeley.edu>
  • Date: Mon, 2 Jan 2012 02:40:23 -0500 (EST)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <jdh6ag$kka$1@smc.vnet.net>

On 12/28/2011 11:53 PM, RDog wrote:
> I am a very new user so I apologize in advance if this question is too
> basic for the group.
>
> Many civil engineering equations are empirically derived and therefore
> the units dont work out exactly. How does Mathematica handle units in
> equations and especially in empirical equations where there may be
> parameters set to weird exponetial powers. Does the program use units
> at all in equations or does the user need to keep track?
>
>

I think the answer is simple/

You say you are a beginner. Assume that Mathematica does not handle units.

When you are no longer a beginner, you can come back to this issue if
you wish.

For fun,
While you are thinking about units, how is it that automobile efficiency
has dimensions of 1/length^2 ?

miles per gallon =  length / (length^3),  right?

RJF




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