Re: energy flows

["Daniel L. MacIsaac" <Dan.MacIsaac@NAU.EDU>]

> > Energy of a system can be increased or decreased, but it does not "move".
>
> Of course it does move; it can propagate through a surface surrounding a
> system.  So there!   :)
>
>
> Hmmm.  How would a scientist settle such an argument?

It gets even worse.  If you believe Einstein, then energy has mass
associated with it (though not very much for typical energies -- hotter
things weigh 'calculably' more, though not measurably so).  In that
interpretive light, energy can be thought of as very stuff-like indeed,
and energy flow becomes necessary.

Dan the Apostate

Dan MacIsaac, Assistant Professor of Physics and Astronomy, Northern AZ Univ
danmac@nau.edu          http://purcell.phy.nau.edu         PHYS-L list owner