On Mon, 1 May 2006, James Newtons Massmind wrote:

> That was REALLY cool!
>
> This relates to a idea I have had in the back of my head for years: What
> surface do you need if you want the drop of water to NOT form that vapor
> barrier and instead have ALL the water flash over in to steam as quickly as
> possible?
> http://www.massmind.org/techref/idea/mc-heat-inject.htm
>
> My assumption is that a very spiky surface with maximal area would be the
> best, but this link from Peter points out that many different possible
> reactions of the water droplet are possible. I would never have guessed that
> it might make it climb up a stair..

I think that you will find that the best way to 'flash' liquid is to 
pulverise it very very small *after* bringing it as near as possible to 
its boiling point while liquid. I wrote on the thread that discussed 
your flash engine idea, that I think that a *really* small engine could 
be made like this (small, as in micromachined or similar).

Peter
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