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Registered Member #1225
Joined: Sat Jan 12 2008, 01:24AM
Location: Beaumont, Texas, USA
Posts: 2253
Mates wrote ...
I do not want to start a new thread so I placed it here - really nice "sparks" photographed by some guy in Prague
Nice! I liked the last two, especially the 6th one. It had a 'streamer' going a complete different direction than the 'main' one. I say streamer because it almost resembles a tesla coil in the sense that it has a stray spark. Did that sound stupid to anyone else?
Registered Member #8
Joined: Thu Feb 02 2006, 04:34AM
Location: Harlowton, MT, United States
Posts: 214
How does that work? Liquid propane is immiscible with water, much lighter than water, and way below the freezing point of water. I have played around with mixtures of propane and ice though, where the propane becomes trapped in the ice when water is added and flash freezes.
Registered Member #964
Joined: Wed Aug 22 2007, 12:39AM
Location: Stockton, CA
Posts: 134
Chris wrote ...
How does that work? Liquid propane is immiscible with water, much lighter than water, and way below the freezing point of water. I have played around with mixtures of propane and ice though, where the propane becomes trapped in the ice when water is added and flash freezes.
I THINK he just bubbled propane through soapy water, then ignited the resulting foam....
Registered Member #1497
Joined: Thu May 22 2008, 05:24AM
Location: Toronto, Ontario, Canada
Posts: 801
Spedy wrote ...
Chris wrote ...
How does that work? Liquid propane is immiscible with water, much lighter than water, and way below the freezing point of water. I have played around with mixtures of propane and ice though, where the propane becomes trapped in the ice when water is added and flash freezes.
I THINK he just bubbled propane through soapy water, then ignited the resulting foam....
They did that on mythbusters with methane gas, since the gas is lighter than air so the foam supports itself into a column of mind boggling heights.
Registered Member #1370
Joined: Mon Mar 03 2008, 09:01AM
Location: Finland
Posts: 56
Yes that was so simple :). I bought a high pressure regulator for 22e (~34$) from local gas tool store Wilhtom. The regulator has a knob that behaves like potentiometer and pressure is freely adjustable within 0-2bar. Gas goes by hose to soapy water and forms bubbles. Bubble size is tunable by adjusting gas pressure. Big bubbles give flames that climb high, but they are weaker against wind.
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