I would not have guessed that this project would work until I saw it myself. It can be really tricky to get just the right amount of fuel into a small volume of air to create a flammable mixture, but the torch seems to work excellently. Check out my sponsor Audible through the following link to claim a free audio book: [ Ссылка ]

Here is the original article that inspired this project: [ Ссылка ]

The way this project works is that once the torch has fed a mixture of propane and fresh air into the vinyl tube, being ignited on one end causes the advancing flame front to push the not yet ignited fuel forward until it reaches the larger volume inside the soda bottle. Having a larger surface area inside the bottle allows the flame front to propagate much more rapidly, creating a loud pop.

An interesting effect I noticed was that the bottle occasionally created an invisible vortex ring which would slam into objects on the far side of the room. In a future video I may experiment more to create a way for those vortex rings to be made more consistently.

The torch used in this video is a Bernzomatic TS8000, you can purchase the same torch here (this is an affiliate link): [ Ссылка ]
The vinyl tubing is 5/8" ID by 7/8" OD. I used a 24oz soda bottle with a standard cap size. #NightHawkInLight

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Check out my latest video: "How To View Invisible Air Currents With Lasers"
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