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Re: [Phys-L] heat content

? In this definition of temperature, E is just the internal energy of the substance whose temperature is being stated. Gross kinetic and potential energies are not included. I am not sure what has supposedly been clarified.

i.e.

∂U
T := --------
∂S | V

I am definitely in the energy is energy camp. However, when teaching an engineering thermodynamics course, one has to use the common terminology of the discipline - such as work and heat. Heat becomes an energy transfer due to a temperature difference, and work becomes a myriad of different types like boundary work, electrical work, etc. But once these transfers are made into a control mass, they are just part of the energy of the control mass. They don't keep a characteristic like "thermal", etc .

Bob at PC

-----Original Message-----
From: Phys-l [mailto:phys-l-bounces@phys-l.org] On Behalf Of John Denker
Sent: Tuesday, February 11, 2014 2:27 PM
To: Phys-L@Phys-L.org
Subject: Re: [Phys-L] heat content


As a corollary, we know that "thermal energy" is the same as "energy".

We know this based on the usual definition of temperature:
∂E
T := --------
∂S | V