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> Funny, I always managed to light open containers of petrol *very* easily
> :-) There's no huge explosion or fireball, just a nice steadily burning
> flame from the top.
I saw burning ethanol once.
...or rather, *didn't* see burning ethanol. It's almost invisible. Which
is quite worrying, when you think about it.
The weirdo patterns on the surface of the liquid were a bit of a
giveaway though...
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On 3 Sep 2009 20:56:26 -0400, Jim Henderson <nos### [at] nospam com> wrote:
>One of the things that made it interesting was that each table had two
>printers on it that shared a print queue. The way HG would print, you
>could end up with half the graphic on one printer, and half on the
>other. :-)
Oops! :)
--
Regards
Stephen
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>> Funny, I always managed to light open containers of petrol *very* easily
>> :-) There's no huge explosion or fireball, just a nice steadily burning
>> flame from the top.
>
> I saw burning ethanol once.
>
> ...or rather, *didn't* see burning ethanol. It's almost invisible. Which
> is quite worrying, when you think about it.
I always had litres of radio controlled car fuel left over that was too old
to use. That was made from methanol and nitromethane with a bit of oil.
Seeing as you can't just pour it down the drain, I had the great idea of
burning it instead. "Hmm, why won't this stuff light goddamnit, light,
light, OWWWW S!&T it's already burning". The heat haze is another giveaway.
IIRC in some American car racing series they use (or used) methanol as a
fuel, pit-lane refuelling fires must have been fun!
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On Thu, 03 Sep 2009 20:15:36 -0700, Chambers <Ben### [at] gmailcom>
wrote:
>Stephen wrote:
>> There are insulators between the cables and pylons so there is no path for the
>> electricity to flow there. The conductors are spaced far enough apart so that
>> the electricity cannot jump between them. This is called engineering. ;)
>
>I always assumed the cables themselves were insulated.
>
>Seriously, are we running uninsulated wires above our roadways?!?!? :o
>
I'll repost this link again but going straight to the relevant paragraph.
http://tinyurl.com/ls34v4
--
Regards
Stephen
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On 3 Sep 2009 20:58:25 -0400, Jim Henderson <nos### [at] nospamcom> wrote:
>>>Because the bare wire isn't exposed, it's insulated.
>>
>> Not on this side of the pond, Jim.
>
>Interesting, I hadn't noticed that - but I hadn't really thought to
>look. :-)
>
Do so and report back ;)
>> I think he means jump or track to.
>
>Yeah, but it still would want to go to ground, and the water doesn't
>provide a grounding influence that's stronger than staying with the wire.
>
Not necessarily, remember power transmission is 3 phase and the path could be
between phases.
--
Regards
Stephen
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On 3 Sep 2009 20:58:45 -0400, Jim Henderson <nos### [at] nospamcom> wrote:
>> Yes but you Yanks have money to burn :P
>
>Not any more we don't. We're burning China's money. :P
LOL
--
Regards
Stephen
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> I always assumed the cables themselves were insulated.
>
> Seriously, are we running uninsulated wires above our roadways?!?!? :o
Yes, just look for "hit power line" on YouTube and you'll see plenty of
random stuff (mostly trees) touching power lines and sparking or creating
fires.
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Chambers schrieb:
> Only if you assume 'char' to be a text character, rather than an 8 bit
> byte (which is what it really is, just as 'int' isn't really a true
> integer, but rather a register-sized word on whatever machine you're
> compiling for).
I really must object here for nitpicking's sake:
char is /not/ an 8 bit byte.
char instead is a data object /at least/ 8 bit in size and being a
multiple of the architecture's basic storage unit. The exact size is
defined in the compiler's <types.h> as CHAR_BIT.
On some exotic 7-bit architecture, for instance, char would have to be
at least 14 bits in size.
There /are/ real-world architectures that do have 16-bit char types
because they cannot individually address smaller words.
On such architectures, it is vital to note that sizeof() always returns
a data object's size in multiples of whatever size a char occupies.
Furthermore, it should be noted that signed char and unsigned char /are/
integer types, and so are the short, int, long and long long types (both
unsigned and signed, even if not explicitly qualified as such).
And no, "int" it is /not/ a register-sized word, but rather an integer
occupying (but not necessarily fully utilizing) at least the "natural
size suggested by the architecture of the execution environment", while
at the same time guaranteeing to store any integer number in the range
from -32767 (sic!) to 32767, with the exact limits being defined as
INT_MIN and INT_MAX in <types.h>.
C data types can be real fun once you're leaving the safety of
mainstream PC architecture :-P
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On Fri, 04 Sep 2009 00:55:22 +0200, "Fredrik Eriksson"
<fe79}--at--{yahoo}--dot--{com> wrote:
>>> That depends on the flame.
>>>
>>
>> Yip! A thermite lance or a nova will do it ;)
>
>A match will do just as well.
I was talking about the specific case of petrol vapour from a pump/fuel tank in
the open air.
Of course petrol is inflammable but in the above circumstance the air/vapour mix
goes from too rich to too lean very quickly.
Trust me :) I used to be in charge of a Fire and Gas section when I worked on an
Oil Rig.
--
Regards
Stephen
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On Fri, 4 Sep 2009 08:45:39 +0200, "scott" <sco### [at] scottcom> wrote:
>Funny, I always managed to light open containers of petrol *very* easily :-)
>There's no huge explosion or fireball, just a nice steadily burning flame
>from the top.
>
Different circumstances, when you are trying to do it deliberately you can find
the right air/fuel mix by moving the match about. I bet if there had been a
strong wind it would have been very hard to light. And this is not because the
wind is blowing the flame out.
--
Regards
Stephen
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