Richard Periut wrote in
:

This is probably less common than someone tripping on the kitchen floor
while holding a tea kettle.


Actually it is quite common. Water heated by any method can do this (under
the right circumtances). In Labs they use special triangular stones in the
bottom of vessels expected to boil so it will bubble. I've had the water
gush out of a cup when I added a tea bag to microwaved water. It bubbled up
like a soda that had salt poured in it.

The smoother the interior surface of the container the more readily this
can occur. That's why the triangular stones.

--
The Beet goes on! (or under)