[Vo]:On loss or gain of energy in presure volume work in solids with varying temperature
Hi I have an idea about what this is all about http://arxiv.org/abs/physics/0508107 The authors talk about inconsistency but my understanding is that it explains two well known phenomena in everyday life. I want to hear what you say before I say more. Can anyone conclude what the two phenomena are? David -- David Jonsson Sweden phone callto:+46703000370
Re: [Vo]:On loss or gain of energy in presure volume work in solids with varying temperature
... one of them would probably be a negative expansion coefficient - i.e. freezing water, or the mischmetals which contract with applied heat Can anyone conclude what the two phenomena are? David
Re: [Vo]:On loss or gain of energy in presure volume work in solids with varying temperature
Sure David, Using the example of a piece of copper rod at ambient temperature, Rapidly bend the rod and it gets hot at the bend. The more rapid the bend, the hotter it gets. No inconsistency unless you wish to rewrite thermo.. which some brainiac should do soon before we tumble. Richard David wrote, I have an idea about what this is all about http://arxiv.org/abs/physics/0508107 The authors talk about inconsistency but my understanding is that it explains two well known phenomena in everyday life. I want to hear what you say before I say more. Can anyone conclude what the two phenomena are?
Re: [Vo]:On loss or gain of energy in presure volume work in solids with varying temperature
Title:Inconsistencies in the current thermodynamic description of elastic solids Authors:Jozsef Garai, Alexandre Laugier (Submitted on 17 Aug 2005) Abstract: Using the contemporary thermodynamic equations of elastic solids leads to contradictions with the fundamental statements of thermodynamics. Two examples are presented to expose the inconsistencies. In example one the internal energy between the initial and final states shows path dependency while in example two changing the temperature of a system at constant volume produces mechanical work. These results are contradictory with the fundamentals of thermodynamics and indicate that the contemporary description of elastic solids needs to be revisited and revised regarding example two, it doesn't produce work, rather work must be done ON the system to keep it at constant volume while the temperature is changed. yes? no? Harry On 17/4/2008 7:15 PM, David Jonsson wrote: Hi I have an idea about what this is all about http://arxiv.org/abs/physics/0508107 The authors talk about inconsistency but my understanding is that it explains two well known phenomena in everyday life. I want to hear what you say before I say more. Can anyone conclude what the two phenomena are? David
