On 5/20/17 2:12 AM, David J "Dave" Windisch wrote:
Hi, all concerned:
Tks much for the speedy replies and suggestions.
Searched NFPA discussion site and found no refs to the Nott Ltd "porcupine
device" debunking mentioned in this thread.
Anybody have a cite, pls?
You're looking for a citation on the debunking?
As far as the claims on porcupines or spider balls...from my page on
lightning and antennas at http://home.earthlink.net/~w6rmk/lightning.htm
Abdul M. Mousa, “The Applicability of Lightning Elimination Devices to
Substations and Power Lines,” IEEE Transactions on Power Delivery, Vol.
13, No. 4, Oct. 1998m pp. 1120-1127.
Paper was peer-reviewed by six reviewers under threat of lawsuits. Paper
states that these devices do not work as the manufacturers claim.
1997 Report on Dissipation Arrays, funded by FAA, Naval Research Labs,
NASA, and USAF
The report, 274 pp., compiled by 17 scientists and engineers from around
the world, provides no definitive physical or theoretical evidence that
lightning dissipation arrays prevent lightning. The USAF presented
photos showing the arrays being hit by lightning.
"Scientists Oppose Early Streamer Air Terminals", A paper by Abdul
Mousa, posted on the referenced site with his permission:
http://www.lightningsafety.com/nlsi_lhm/charge_transfer_opp.html
"Charge Transfer System is Wishful Thinking, Not Science" from Charles
Moore, at the Langmuir Lab in New Mexico. Includes the following
statement: "It is now well established that surface conditions have
little to do with the initiation of cloud-to-ground lightning
discharges, high in thunderclouds."
http://www.lightningsafety.com/nlsi_lhm/charge_transfer.html
William Rison has a nice paper that covers all this. "There Is No Magic
To Lightning Protection: Charge Transfer Systems Do Not Prevent
Lightning Strikes "
http://www.lightningsafety.com/nlsi_lhm/magic.pdf
And finally, a paper by Uman and Rakov (who have forgotten more about
lightning than any reader of this page probably knows) in the Bulletin
of the American Meteorological Society, Dec 2002 issue: "A Critical
Review of Nonconventional Approaches to Lightning Protection"
http://www.lightningsafety.com/nlsi_lhm/Uman_Rakov.pdf
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