[boost] Re: runtime unit-modifiablephysical-quantitiesusingpqs1-00-01

From: Jesse Booher (jbooher_at_[hidden])
Date: 2004-01-05 10:13:23

Andy Little wrote:
>As far as dimensional analysis and units J is exactly equivalent to N.m
>Therefore in calculations ie within the system there is no problem.
>The problem only arises at output, where the programmer may wish to have N.m
>or J as the expression for the units.

A Joule is quite specifically a measure of work, whereas a Newton-meter is, by convention,
a measure of torque.  It would be inappropriate to add units of torque and work together
directly, even though both are technically a force distance product.

regards,
Jesse Booher