(Fwd) lighting

[jorge]

Forwarded message:
From:     Self <jhoyos>
To: heath at listser.tempe.gov
Subject: lighting
Reply-to: jhoyos at ou.edu
Date: Wed, 13 Aug 1997 19:58:11 -0600

A Faraday cage is an equipotnetial (its surface) within a static
electric field,but what about a variable field ?

If it's an equipontial there is no charge flow,so How the stroke
moves trough it? If there is a flow a gradient there must be.