[Milsurplus] Coronal Mass Ejection

[hwhall at compuserve.com]

>
The transients of the lightning pulse thru the tower to the ground system 
will usually result in a magnetic pulse strong enough to magnetize CRT displays 
>
There's a big difference, though, between the high frequency short-duration transients in lightning events and the extremely low frequency extended duration CME events. The two aren't very comparable and folks thinking about protection ought to be cautious about generalizing from one to the other.

Wayne

 WB4OGM

 

-----Original Message-----
From: Ray Fantini <RAFANTINI at salisbury.edu>
To: milsurplus <milsurplus at mailman.qth.net>
Sent: Fri, Aug 1, 2014 12:55 pm
Subject: Re: [Milsurplus] Coronal Mass Ejection


All this is starting to sound a lot like how the world was going to come to an 
end in the year 2000, anyone else remember the great Y2K catastrophe?

Among other things I work in radio and television broadcasting where we have 
very large towers that are routinely struck by lightning during almost every 
storm. The transients of the lightning pulse thru the tower to the ground system 
will usually result in a magnetic pulse strong enough to magnetize CRT displays 
to the point of having to be degaussed and occasionally cause issues with our 
connections to the utilities but with good design and better grounding we 
regularly survive direct lighting strikes and the EMP pulses associated with 
them just as a matter of business. Can see where large open systems like the 
power grid is at risk to large scale events but that same system is always under 
attack by mother nature and is way more robust than people think it is.

Ray F
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