Re: 1000 foot sparks?

For those interested in long sparks:

Check out "Gas Discharge Physics" by Yuri P. Raizer (Springer-Verlag 1991)

On page 159 experiments with optical breakdown in air using a Neodymium 
laser are discussed. Apparently a 60meter (196 feet) visible discharge 
channel was obtained with a laser pulse of 160 joules with peak power of 

it would have been interesting if they could have followed this initial ionized 
path with discharges from a large tesla coil. I wonder how long the 
discharge channel would have been stable...