Timeline for $E,H,\rho,\vec{j}$ intensive? $B,D,\Phi,\vec{A}$ extensive? Why not $ DdE,BdH ,\Phi\delta\rho,\vec{A}\cdot \delta \vec{j}$ as infinitesimal work?

4 events

when toggle format	what		by	license	comment
Apr 29, 2014 at 2:59	comment	added	Blackbody Blacklight		How are Q and I extensive? They are contained within the given subsystem. There is an assumption that these systems won't be divided. $\rho$ is more like an intensive chemical property, but no vector field is like that… if you want to consider any vector field as intensive, you need to decide on another model, and IUPAC at least made a decision not to do that.
Apr 28, 2014 at 18:45	comment	added	Jian		Just like in thermophysics, $PdV$ is true,but not $VdP$.
Apr 28, 2014 at 18:42	comment	added	Jian		$EdD$,$HdB$ can also be written as $\rho \delta \Phi$,$\vec{j}\cdot \delta \vec{A}$. But the respective $Q$,$I$ of $\rho$,$\vec{j}$ have more extensive nature than $\Phi$ and $\vec{A}$. And I wonder why can't we write $DdE,BdH ,\Phi\delta\rho,\vec{A}\cdot \delta \vec{j} $ as infinitesimal energy ?
Apr 28, 2014 at 6:00	history	answered	Blackbody Blacklight	CC BY-SA 3.0