Kenneth Wu kwu at mail.sas.upenn.edu
Sun Dec 5 23:27:38 EST 1993

I don't think PNI has anything to do with firewalking, inaddition to the
low heat capacity of the coals as mentioned in another message, there is
another reaosn.

The firewalking ceremony is done at night, when the grass is damp. The
walkers walk onto the coals, and a thin layer of vapor forms between the
feet and the coals, like when you put water droplets on a frying poan and
they stick around for a very long time because of this vapor.

This is the Leidenfrost effect.

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