Talk-Polywell.org

In the news recently, over unity carnot engines anyone?

http://arxiv.org/pdf/1211.0545.pdf

What kind of energy do you need to expend to produce this pool of negative heat?

hanelyp wrote:What kind of energy do you need to expend to produce this pool of negative heat?

Lasers do this. It is called a population inversion. Most thermo text books make at least passing reference to it based on the fundamental definition of temperature. dE/dT IIRC.