Question regarding vortex cannon Answered
I have planned to build a vortex cannon for shooting smoke rings.
My questions are now:
1. Is it essential to have a round container? Or is a square card box as good? (there are no square smoke rings, or :-)
2. If it is round, does a short and big (in diameter), or a slim and long one better?
3. Using drinking straws on the exit, would this have an effect (in the style of laminar flow)?
Thanks for your thoughts,