The discussion of Papp and his engine leads me to one question. Is it possible that the extra force that Russ, the video experimenter, obtained using hydrogen as the active gas was due to the dissociation of the hydrogen molecules into individual atoms? I suspect that the pressure must increase in such an environment due to the fact that there are more particles colliding. This may have been discussed previously, but the thought just came into my mind and I wanted to pass it on.
Dave
