quentron.com

[profitis]

no imagination required @sarkeizen,just integration.because the oxygen activity potential difference is directly tied to the work function difference at ordinary pressure,compensation must occur in order to flatten the potential.thus a karpen system will only come to rest when a pressure difference is maintained between the two electrodes.here Eo2=oxygen activity potential.p=gas pressure:   

[broli]

Here's a different take on the above.

Two similar and parallel Ag-O-Cs surfaces in a vacuum tube ceaselessly eject electrons at room temperature. A static magnetic field applied to the tube plays the role of "Maxwell's demon". The thermal electrons are so controlled by the magnetic field that they can travel only from one Ag-O-Cs surface to the other, resulting in collections of positive and negative charge on the two surfaces, respectively, with an electric potential between the two surfaces. A load, a resistance outside of the tube for example, is connected by wires to the two surfaces, continuously receiving electric power from the tube. The ambient air is a single heat reservoir in this situation, and all of the heat extracted by the tube from the air is converted to electric energy, without producing any other effect. The authors believe that the experiment is in contradiction to Kelvin's statement, and that the famous hypothesis proposed by Maxwell about 140 years ago is eventually realized.

The paper:
http://arxiv.org/abs/physics/0311104

The video:
http://www.youtube.com/watch?v=FCCPeEKIVvQ

Different paper same team:
http://arxiv.org/abs/physics/0509111

A different view on the experiment:
http://www.mdpi.com/1099-4300/15/5/1916

[profitis]

really interesting @broli.2 same work functions with the magnetic field acting as suppressor grid.what do you think would happen if we took Cs or barium and put it in close proximity(a few nanometers)from a high work function material eg gold and then bring it close to a magnetic field? Might solve hardcastles dilemma and do away with the need for that cumbersome middle suppressor grid.

[sarkeizen]

no imagination required @sarkeizen,just integration.because the oxygen activity potential difference is directly tied to the work function difference at ordinary pressure,compensation must occur in order to flatten the potential.thus a karpen system will only come to rest when a pressure difference is maintained between the two electrodes.here Eo2=oxygen activity potential.p=gas pressure:

Yawn.  Still no formal argument.  Still no cite. So still you fail.

[profitis]

errm @sarkeizen..formal argument?fail? A karpen cell will absolutely not stop until you maintain a   pressure difference between the two gaseous electrodes.this you can test .this you can check.this you can 1)see 2)feel 3)touch 4)test 5)mathematicize.this @ sarkeizen is revolutionary..we are entering a new age with new energy sources.money is to be made.