I think James could be correct that the choice of noble gases is NOT a stage prop.
However, and once again - keep in mind that Papp used radium as his prime energy source, and his patent makes this clear... the noble gases he used could have been important but ancillary in a surprising way. Papp's original IP is entitled: "Method & Means of Converting Atomic Energy Into Utilizable Kinetic Energy". The Rohner's and other scammers who came along later have clearer wanted to dodge this all-important issue of nuclear power, because they cannot legally obtain radium, which is probably the sine qua non for a working Papp engine. They cannot work without it. The most interesting detail, for real science - is why Papp used this particular mix instead of hydrogen. It probably was important and NOT a stage prop, as mentioned. This rationale could actually involve a real discovery by him - and it could related to gas interaction with an alpha emitter. That would be especially true of helium - which is the bulk of the mix, and is essentially a neutralized alpha. In short, the real discovery of Papp, unbeknownst to even himself, could relate to quantum correlation fields and entanglement. Here is my favorite citation for "wisdom from comic books" http://marvel.wikia.com/Probability_field ....and it is strangely apropos for fringe inventor and his 300 mph submarine. Jones From: James Bowery Observing all the trouble Papp went to during the fueling of his engine, it is rather difficult to believe that the noble gas was a mere stage prop. See: http://inteligentry.com/shared/PappW/4-Fueling.mp4 Jojo Jaro wrote: Funny, but Papp may have found a clever and "magician trick" way of running an internal combustion engine making it appear to be overunity. With the process appearing to work with normal air, and now hydrogen, the noble gas "mixture" may just have been a convenient and effective "magician's sleight of hand technique" to divert attention from his engine just being an ordinary Internal Combustion Engine. Everybody was focusing on the "novelty" of using a certain "magic formula" of noble gases that nobody bothered to check the energy balance. I believe this is what happened.
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