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According to the EB, the field strength for electrical breakdown of air atguestimate
atmospheric pressure is 10,000 V/cm. Within thunderclouds, fields of 1000
V/cm are exceeded only over limited areas. This information is also
available in the CRC Handbook in the spark gap section.
At 5:46 AM -0800 2/18/2001, John S. Denker wrote:
At 02:23 AM 2/18/01 -0800, Bernard G. Cleyet was skeptical of my
of the breakdown field:
It's about 3 megavolts per meter.