Date: Wed, 02 Feb 2011 15:12:10

Author: --- John Welch

Subject: Re: Methane and Flammable Smoke Rings?

Post:








In the youtube airzooka video - it sure looks like they are using
acetylene or oxygen+acetylene. And they use a map gas torch instead of
a candle.
-John

Chuck Patten wrote:

or try super-chilling the base of the tube to make the mixture more dense
for better range and cohesion of the gas ring...

cheers,
chuck...

-----Original Message-----
From: tap-l-owner@lists.ncsu.edu [mailto:tap-l-owner@lists.ncsu.edu] On
Behalf Of William Beaty
Sent: Monday, January 24, 2011 7:09 PM
To: 'tap-l@lists.ncsu.edu'
Subject: Re: [tap-l] Methane and Flammable Smoke Rings?



Propane in Airzooka
http://www.youtube.com/watch?v=gFiJo18YYZA

Tilt it until the last second so gas doesn't all escape.
Perhaps add smoke, for easy tracking.

On Mon, 24 Jan 2011, Matt Lowry wrote:



A colleague and I were just testing out our new big smoke-ring cannon,
which works beautifully (thanks for all the advice last spring, btw).
But in the process we wanted to see if we could make flammable
methane-rings, so we sprayed some methane gas into the cannon & fired it
at a lit candle, but the rings didn't flame up. We knew they hit the
candle from the fact that it flickered, and we tried a variety of
proximities but nothing worked.




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William J. Beaty SCIENCE HOBBYIST website
billb at amasci com http://amasci.com
EE/programmer/sci-exhibits amateur science, hobby projects, sci fair
Seattle, WA 206-762-3818 unusual phenomena, tesla coils, weird sci





--
******************************
John Welch

Cabrillo College Physics Dept.



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