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What does burnt hydrogen turn into? Water.
Perpetual motions machines don't work.
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I'm not sure that I understand this argument in this context...
But this was posted a long time ago. My first search on youtube found something posted in May
http://www.youtube.com/watch?v=aGg0ATfoBgo
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The idea is that, at a bare minimum, you have to pump in enough energy to the water w/ the RF radiation to break the two O-H bonds. Then, when you burn the hydrogen, you get water right back, and the energy you release is exactly equal to the energy in two O-H bonds. In other words, as a best case, the energy you get out is exactly equal to the energy you have to pump in. Furthermore, according to the laws of thermodynamics, you're never going to be able to achieve this best case. Instead, energy you're pumping in will be lost along the way due to heating the environment, so the energy you spend is going to be greater than the energy you get out, resulting in a net loss.
Now, this would be acceptable if somehow we got the RF radiation for free, say, from the sun. However, we don't exactly get a whole lot of RF radiation from the sun. Instead, we get a lot of IR, UV, and regular old light, and that's not what we need here. To power this guy's RF source, he's using electricity, energy we've already taken great pains to produce. Thus, this system represents a pretty significant net loss in energy. He's found a cute substitute to electrolysis, the process in which you break the O-H bonds in water with straight electricity, but he's not found a miraculous source of energy. Any junior physics or engineering major could tell you this guy's a crackpot.
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Yea, makes sense.