[Alkim]

Well I never took the PE exam, and it is a couple of decades since my undergrad and graduate engineering degrees that included a couple of courses in thermo, so things are a little rusty, but prodded by a few of these posts I've just dusted off the math and made a go of it. BEST case, requires an 8 oz zinc-air battery. And they are going to sell that, and the device itself for $3..?!

Part of my reaction is that I am a patent attorney, and every patent attorney gets 'inventions' that come through the door from well-meaning but essentially clueless people. After a while you get to develop a bullsh*t detector. This one just rang my gong. I suffer from sleep apnea and I know what a real thing it is, and the idea of these guys just walking away with $$ from desperate people, just, again, rang my gong.

I will say that it has been fun seeing these posts--thank you!