Chronology Current Month Current Thread Current Date
[Year List] [Month List (current year)] [Date Index] [Thread Index] [Thread Prev] [Thread Next] [Date Prev] [Date Next]

Re: Forces w/o third-law partners???????

At 6:38 AM -0400 10/21/99, John Denker wrote:

d(momentum in a region)/d(t) = - net momentum flowing across
boundaries of the region.
i.e.
d(P)/d(t) = - div P

This is the 100% standard formulation of a *local* conservation law.

ooooh, ooooooooh, this sounds DANGEROUSLY like 'reification' of momentum.

(i.e. I LOVE it!)

-. .-. .-. .-. .-. .-. .-. .-. .-. .-
\ / \ / \ N / \ C / \ S / \ S / \ M / \ / \ /
`-' `-' `-' `-' `-' `-' `-' `-' `-'
Chuck Britton Education is what is left when
britton@odie.ncssm.edu you have forgotten everything
North Carolina School of Science & Math you learned in school.
(919) 286-3366 x224 Albert Einstein, 1936