Re: Volcano lake turns from blue to red

In article <127omgbe2c1r67a@xxxxxxxxxxxxxxxxxx>, Jo Schaper wrote:
But depending on the temperature and
depth of the water, I wouldn't say it is entirely impossible at least
for a while...before the water explosively vaporizes...just as an
observer above a karst window would see a dive light down below.

Critical pressure for water is what? 300 bar? So you'd need a
water depth of 3km or so, minimum? That's enough to absorb all light
that human eyes are sensitive.
Where's that paper about the shrimp that has conventional (for an
arthropod) eyes when it's planktonic in the photic zone, but which
dismantles those eyes at a late moult, builds a different set of
IR-sensitive eyes, and goes wandering off into the depths in search of a
black (but IR-bright!) smoker to settle down for a sessile adulthood. I
always thought that would be a nice one for prodding Creationists with.

--
Aidan Karley, FGS
Aberdeen, Scotland
Written at Wed, 31 May 2006 00:05 +0100, but posted later.

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