[time-nuts] Lightning and grounds...
Lux, Jim (337C)
james.p.lux at jpl.nasa.gov
Mon Oct 5 00:37:05 UTC 2009
On 10/4/09 4:24 PM, "Chuck Harris" <cfharris at erols.com> wrote:
> Don Latham wrote:
>> Use of "brush" or radioactive lightning rods, as has been pointed out, is
>> pointless and even dangerous. If you feel you have to experiment with
>> such, at least just use a sort of ball of barbed wire rather than paying
>> someone a small fortune for junk. Any "brush discharge" lightning rod only
>> serves to protect itself, and not even that in the presence of wind.
> Curious, a quick tour of Johns Hopkins Applied Physics Lab's satellite dish
> farm finds many instances of brush style lightning rods...
> They must all be wrong too!
Or they work no worse than anything else as an air terminal, and the labor
to take them down is more costly than just leaving them there.
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