Message from discussion
Doubleplusgood - first impressions
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From: joebloogs <varc...@msn.com>
Newsgroups: aus.motorcycles
Subject: Re: Doubleplusgood - first impressions
Date: Mon, 19 Feb 2007 17:52:04 +1030
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On Mon, 19 Feb 2007 16:05:59 +1100, Iain Chalmers
<bigi...@mightymedia.com.au> wrote:
>In article <i_9Ch.871$8U4....@news-server.bigpond.net.au>,
> Andrew McKenna <NOcmorSPAM3...@NObigpond.SPAMnet.au> wrote:
>
>> Iain Chalmers wrote:
>>
>> >> Watch out for lightning strike!
>> >>
>> >> --
>> >> Cheers
>> >>
>> >> Andrew
>> >>
>> >> (Make a lightning rod by gluing a blunt ferrous rod to the top of the
>> >> motorcycle helmet, attaching a 4 metre length of copper strap to the rod
>> >> with copper wire, and attaching a suitable boat anchor to the free end
>> >> of the strap to make sure it stays earthed - any Windows 98 computer
>> >> would do.)
>> >
>> > A _blunt_ rod? Have you been taking physics lessons from Hamish again?
>> >
>> > big
>> >
><snip>
>
>> The results of this study suggest that moderately blunt metal rods
>> (with tip heighttotip radius of curvature ratios of about 680:1) are
>> better lightning strike receptors than are sharper rods or very blunt
>> ones.
>
>OK, I'm wrong (again)...
>
>(at least I'm not alone, it does say "It is commonly believed,
>erroneously, that a rod ending in a sharp point at the peak is the
>best"... )
>
>big
Bigi... is it allowed to admit one is wrong in this group?
Johno
Beer mate?
|
