it is a question of working point. it may be a negative retroaction only at working temperature. Of course heat is positive retroaction at the beginning (a requirement more honestly)
I suspect Rossi play with loading and temperature relationship, which allow non linear effects... anyway we miss data. it is only speculation. what I can say is that it can be complicated, and we find similar situation in electronic systems. imagine negative resistance, negative inductance... it exists, but around a working point. 2014/1/1 Eric Walker <[email protected]> > On Wed, Jan 1, 2014 at 11:01 AM, Alain Sepeda <[email protected]>wrote: > > I don't know if it is real, but sure a negative retro-action is needed, >> and that it is done through electricity is a good point. >> > > If the "mouse" provides active cooling, how can it have a COP in excess of > 1, as has been mentioned in comments elsewhere? Have I misunderstood > something about COP? > > Eric > >
