Joshua Bell wrote:
> 
> Someone on rec.puzzles speculated that it's a home electricity/heat
> generating system based on a practical Sterling engine.
> 
> This fits many of the tidbits from the article:
> 
> - $2000 seems reasonable
> - It would change city infrastructure, since electric lines wouldn't be
> necessary.
> - It might violate existing residential regulations, thus requiring
> permission to install one.
> 
> Less exciting, but probably a more realistic guess that others we've come up
> with.
> 
> Joshua
> 


It *could* be a Tesla coil...


-- Matt Grimaldi

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