On Fri, 04 Sep 2009 00:36:00 +0200, Stephen <mcavoysAT@aoldotcom> wrote:
> On Thu, 03 Sep 2009 17:59:21 +0200, "Fredrik Eriksson"
> <fe79}--at--{yahoo}--dot--{com> wrote:
>
>> On Thu, 03 Sep 2009 17:37:20 +0200, Stephen <mcavoysAT@aoldotcom> wrote:
>>> Actually it is quite hard to ignite petrol from a petrol pump with a
>>> naked flame.
>>
>> That depends on the flame.
>>
>
> Yip! A thermite lance or a nova will do it ;)

A match will do just as well.


>>> Besides having a LEL (Lower Explosive Limit) petrol has an Upper
>>> Explosive Limit (UEL) where above that level the gas/air mixture is
>>> too rich to burn. In the open air the gas/air mixture goes from too
>>> rich to too leen very quickly. I once saw a petrol pump attendant put
>>> a lit cigarette into the mouth of a full petrol tank.
>>
>> http://www.intuitor.com/moviephysics/mpmain.html#cigarettes
>
> That agrees with what I said, I think.

Regarding cigarettes, yes.



-- 
FE

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