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hobbiteater 
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Joined: 07 Dec 12 Location: United Kingdom Online Status: Offline Posts: 107 |
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 Topic: lightningPosted: 20 Oct 13 at 8:50pm |
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What happens when a dinghy gets hit by lightning?
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alstorer
Really should get out more 
Joined: 02 Aug 07 Location: Cambridge Online Status: Offline Posts: 2899 |
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Posted: 20 Oct 13 at 9:09pm |
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Whilst I'm not entirely sure, I'm hovering my hand over the QI-style klaxon for anyone that makes claims as to the electrical conductivity of carbon fibre.
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Al |
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Quagers
Far too distracted from work 
Joined: 24 Oct 06 Location: United Kingdom Online Status: Offline Posts: 279 |
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Posted: 20 Oct 13 at 9:31pm |
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As was said in Cowes today as a storm rolled through, anything will conduct if you put enough power through it.
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JimC
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Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6660 |
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Posted: 20 Oct 13 at 9:46pm |
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If you're in the dinghy I believe you may well get away with it. I understand the really bad scenario is to be in the water when there's a strike nearby, because you conduct electricity better than the water. So whatever else you do, don't jump in the water for fear of the boat being struck.
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iGRF
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Joined: 07 Mar 11 Location: Hythe Online Status: Offline Posts: 6499 |
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Posted: 21 Oct 13 at 12:01am |
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The same as what happens when a windsurfer gets hit by lightning, sparks fly all over you like Luke Skywalker being zapped by the evil emperor, your glasses fly off into the water in a shower of sparks and you get blown into the water.
But wearing a wetsuit with rubber boots you are protected by the Faradays cage effect, it goes round you rather than through you. You still get stunned though. And let nobody tell you lightning doesn't strike twice.. I've been zapped twice, once up at Grafham in 1980 ish and again a couple of years back sailing at Hythe.  Edited by iGRF - 21 Oct 13 at 12:02am |
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alstorer
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Joined: 02 Aug 07 Location: Cambridge Online Status: Offline Posts: 2899 |
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Posted: 21 Oct 13 at 6:53am |
Just because it will "conduct" doesn't mean that it won't rapidly heat, burn and blow apart. Problem is that whilst carbon fibres may be conductive, the resin fully coating them and binding them together isn't. I've seen what happens to panels made of basic carbon/epoxy that are hit by simulated lightning. It isn't pretty.
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Al |
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sargesail
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Joined: 14 Jan 06 Location: United Kingdom Online Status: Offline Posts: 1459 |
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Posted: 21 Oct 13 at 7:28am |
And I thought lightning took the shortest path to earth....
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hobbiteater
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Joined: 07 Dec 12 Location: United Kingdom Online Status: Offline Posts: 107 |
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Posted: 21 Oct 13 at 8:30am |
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iGRF
Rubber = insulator so cant act as a Faraday cage = A Faraday cage is an enclosure formed by conducting material or by a mesh of such material
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iGRF
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Joined: 07 Mar 11 Location: Hythe Online Status: Offline Posts: 6499 |
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Posted: 21 Oct 13 at 8:34am |
It travels through the surface water on your suit, just pray you're wet at the time and or it's raining. |
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Medway Maniac
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Joined: 13 May 05 Location: United Kingdom Online Status: Offline Posts: 2788 |
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Posted: 21 Oct 13 at 9:54am |
This may explain certain mystery theories... Sorry. just couldn't resist that comment.
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