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: [Phys-l] T dS versus dQ

At 4:47 PM -0800 1/18/10, Bernard Cleyet wrote:
I shoulda used "skeptical". and added I hope they will be.

RE: creating entropy. I'm further confused. I thought adding E via a heater would be entropic while adding E via P dV (slowly*) would be isentropic, with the end states being different for the same E.

If I'm getting this right - the heater WOULD be just as 'entropic' as the speaker is. The speaker is a closer analog of fast moving piston. The 'mechanics' of the heater are way different. Speaker is still 'mechanical'. I think that it is the similarity of the speaker to the piston that is being stressed.