Peter wrote regarding 'Re: [OT] Homebrew fountain help' on Thu, Mar 02 at 13:31:
> The hole size is *very* related to the stream path. If you read my 
> previous posting then you should know that a small hole with high 
> pressure (=head height) will yield a fast stream that will break up and 
> be strongly braked by air, thus not rising to the expected height.

So, how does one maintain a coherent, relatively small stream?  I'm
specifically thinking about those water "sculpture" things that you
see at theme parks and other outdoor venues, where there are various
combinations of synchronized streams of water at various times.  Do
they rifle the nozzle to keep the stream together, or it entirely
based on matching the pressure to the orifice size?  Maybe something
to do with the length of the orifice?

--Danny, wondering why they didn't cover useful things like this in
his "fluids" physics course :)
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