On 3-9-2009 11:09, Stephen wrote:
> On Thu, 03 Sep 2009 10:06:46 +0100, Invisible <voi### [at] devnull> wrote:
> 
>>>> Rain water isn't chemically pure. (Depending on pollution levels.) Once 
>>>> the pylon gets wet, it's entire surface is covered in a continuous sheet 
>>>> of water, which also covers all of the cables. So why don't they short out?
>>> There are insulators between the cables and pylons so there is no path for the
>>> electricity to flow there.
>> Indeed. This is why it works when they're dry.
>>
>> However, when those insulators are covered with a continuous layer of 
>> water...
> 
> Look at the insulators, they are a strange shape. That shape ensures that they
> are not covered with a continuous layer of water. Magic, isn't it :)

For some reason I saw nobody referring to these as 'magic mushrooms', I 
wonder why.

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