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Comment Submarine crews (Score 1) 356

I've always thought submarine crews would be better suited to space travel than Air Force test pilots. They need people who can deal with being in small, confined, pressurized vessels for long stretches of time without being able to go outside. And they wouldn't insist on having a window and control stick!

Comment Re:Power density or energy? (Score 1) 444

A power source that lasts forever is suddenly not very useful if it only delivers a few milliwatts

I'm sorry you think so. I'd gladly take a power source that puts out a small trickle of energy; and I'd plug it into a Lithium Polymer battery. I use my flashlight for a few minutes per day if averaged out, so a few small cells like this could easily keep the flashlight topped off. Many devices that run on batteries have this intermittent power requirement. Then there are devices that only require a small amount of power. How much power does a smoke detector draw? Mine runs on a 9v for a year or more so what is that, 14 milliwatts? I can think of endless uses for something the size of a penny that puts out a few milliwatts.

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