When I was a teenager I tried to burn some brush with gasoline. I added some
gas, It did not lite. I added more, same thing. More then, K-boom, but not in
the brush pile but rather in a dip 15 feet away from the brush pile. The
fumes, heaver than are went into the dip. Lesson learned the
Curious side note on some of our mistaken assumptions on ignition and
combustion. (oxygen free)
Did you know that CO2 can be a useful oxidizer? There are actually a few
chemicals that will burn quite violently in CO2.
The main one is silane - which is a molecule like methane but with
(as much as possible) any bends in
the passageways.
-Mark
From: Eric Walker [mailto:eric.wal...@gmail.com]
Sent: Sunday, April 22, 2012 10:05 PM
To: vortex-l@eskimo.com
Subject: Re: [Vo]:Ignition
On Sun, Apr 22, 2012 at 9:59 PM, mix...@bigpond.com wrote:
Actually, the liquid
Now, all we need to do in-order to get to Mars quickly, so we can colonize
or occupy it, would be to dramatically increase our consumption of coal,
oil, diesel, gas, right here on Earth,,, thus turning human-compatable
atmosphere into that of Mars,,, thus saving the cost and rather lengthy
Sunlight will cause ignition, with only slight focusing.
Magnifying glass is sufficient. Be my guest to try it, but stand back...
This indicates that it is not only energy per photon that is important, but
energetic photon-density per unit area.
-Original Message-
From:
In reply to Jones Beene's message of Sun, 22 Apr 2012 15:14:40 -0700:
Hi Jones,
You are probably correct, but that just shifts the definition of the problem.
The question then becomes, why is density important?
(I'm looking for an answer involving a molecular level analysis.)
Sunlight will
Let me give this a try. I suspect that the magnitude of energy delivered by
the UV rays is not quite enough to allow ignition of a small region of the
gasoline. It reminds me of the ignition of gunpowder where a flame can be
placed upon a small amount of powder and it takes some time before
which looks suspiciously like the pictures I have seen.
Dave
-Original Message-
From: mixent mix...@bigpond.com
To: vortex-l vortex-l@eskimo.com
Sent: Sun, Apr 22, 2012 6:21 pm
Subject: Re: [Vo]:Ignition
In reply to Jones Beene's message of Sun, 22 Apr 2012 15:14:40 -0700:
i Jones
At 05:02 PM 4/22/2012, mix...@bigpond.com wrote:
Here's a little conundrum that has troubled me for some time.
Take a cup of gasoline and place it in open sunlight. It will slowly
evaporate.
Bring a flame near it and it will suddenly ignite.
Why don't the UV rays from sunlight cause
In reply to Abd ul-Rahman Lomax's message of Sun, 22 Apr 2012 21:52:35 -0500:
Hi,
[snip]
I don't know the specific energies involved, but my sense of this is
as follows:
First of all, yes, it's obvious: gasoline does not ignite just
because an individual molecule is oxidized, as it will be if,
I was considering the gasoline vapor ignition question further and thought that
a simple math example of the effect would shed light upon the subject. An
intense amount of local heating is generated when a small region of vapor mix
is ignited by some means. This released heat energy then
On Sun, Apr 22, 2012 at 9:59 PM, mix...@bigpond.com wrote:
Actually, the liquid gasoline never burns. Only vapor burns. This is
true in an
engine as well. The smaller the droplets, the more easily they evaporate
and
provide the necessary vapor.
Does this follow from the fact that the
Sent: Mon, Apr 23, 2012 1:05 am
Subject: Re: [Vo]:Ignition
On Sun, Apr 22, 2012 at 9:59 PM, mix...@bigpond.com wrote:
Actually, the liquid gasoline never burns. Only vapor burns. This is true in an
engine as well. The smaller the droplets, the more easily they evaporate and
provide
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