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Re: Power source

At 07:54 PM 19991108 EST,  wrote:
>A man from MIT used a spring in the bottom of his shoes to power a small 
>wearable. Also, recently patented, people used the ambient heat in air to 
>make an outboard boat engine. This could possibly be scaled down and paired 
>together with the spring as a starter (activation energy required) and the 
>ambient heat/pump engine being used to power the wearable. No fuel, no waste, 
>except for oxygen and hydrogen.

Engines running off of thermal differences run because they have both a
heat source and a heat sink, and these are at different temperatures. The
boat probably used the difference between the air a foot or so above the
water, and the water temperature a foot or two below the surface. Carrying
around a large enough heat sink is a more significant problem for a wearable.

-dsr-

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