Fix physics-unit script

[Klortho]

Playing with this some this evening, I'm noticing that the physics-unit script seems to be a work in progress. I like the way it's designed, first of all, by invoking Script.pm, and putting all the meat in there.

Here are a couple of problems I've noticed:

• "physics-unit cubic": dies.
• "physics-unit farad": returns "conversion: 0.001 farad". This is because you're assuming that the base unit for one of the types (in this case capacitance) has a multiplicative factor of 1. That's not the case.
• "physics-unit Capacitance": doesn't work quite right.

I'd like to rework it a little so that it returns a different report for each type of name.

It should also be really easy to enhance it to do conversions:
physics-unit "furlongs per fortnight" "metre per second"
> 1.663×10−4

[jberger]

Duplicate of #15, at least partially. I really did hack this together quite quickly as a proof of concept. Please, make any changes you want, it seems that you get my general concept for the script, but I don't know enough of the internals to make it work correctly in all cases.

[jberger]

One other thing: The best part about having the logic in a module is that we can write some tests for the script's major functions without system calls. I just need to get around to writing them :/

[Klortho]

I fixed the specific problems in this ticket's description.

[jberger]

Well done sir!