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Just because it is rare does
not make it an urban legend. There's no correlation.
----- Original Message -----
Sent: Sunday, February 06, 2000 12:48
PM
Subject: [CTRL] Microwaved Water Urban
Legend
-Caveat Lector- <A
HREF="http://www.ctrl.org/"> </A> -Cui Bono?-
Okay, here's
the segment of the Tourbus newsletter I got a few weeks ago, explaining how
the exploding microwaved water phenomenon is
extremely rare...
June ------------------------------
URBAN
LEGEND #2: water heated in a microwave oven could possibly 'explode' into a
steam bubble, causing a scald burn.
Ding-ding-ding. We have a
winner! It turns out that this urban legend is true ... sort
of. It is theoretically possible that water heated in a microwave
oven could reach temperatures above 100 C without turning into steam.
When something is added to this superheated water (a tea bag, a spoon, or
whatever), the water would rapidly change states from water to
steam.
Fortunately, this is pretty rare. So rare, in fact, that
you need not warn your friends about it. According to our friend
David Emery,
A search of the medical
literature on microwave injuries ... [shows]
references to trauma caused by everything from
overheated pizza to exploding eggs, but no
mentions I could find of serious injury due
to surges or explosions of boiling water.
Anyway, if you want to learn
more about turbulence and nucleation in superheated liquids (whee!), take a
look at either
<A
HREF="http://www.snopes.com/spoons/faxlore/microwav.htm"> http://www.snopes.com/spoons/faxlore/microwav.htm
</A>
or
<A
HREF="http://urbanlegends.about.com/library/weekly/mcurrent.htm"> http://urbanlegends.about.com/library/weekly/mcurrent.htm
</A>.
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