Vortex Cannon

Vortex Picture1
There may not be many practical reasons to create a cardboard box that shoots rings of dust or fog, except it is F-U-N.

The vortex cannon creates spinning rings of liquid or gas, also known as toroid vortices, and shoots them across the room.  (These are sometimes commonly known as “smoke rings.”)  All you need is a large box, a compass (or you can make your own), scissors, smoke, fog or dust for the rings and about 20-30 minutes, and you’ll be in business!

And it’s not everyday you can make a cannon without threat of injury or pretty major destruction – but one that has enough power to knock over a pyramid of styrofoam cups (as you can see in this video from the URN Science Show).

Download the instructions here:  Vortex Cannon DLC FINAL 2

If you like this project, you can graduate up to more elaborate versions with an adult’s help.