--------
Lux, Jim writes:

> Can one discipline a geyser to an external source?
>
>a) I assume there's some data somewhere on eruption timing - sure, Old 
>Faithful is quite regular, sufficiently that they can say "the next 
>eruption will occur at" and people will gather and watch it.

Last I heard, they "seeded" it by pouring some harmless household
chemical (soap?) into it ?  I was told that this also regularized the
size of each "performance".

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
p...@freebsd.org         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
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