August 2008
Intermediate to advanced
192 pages
8h 8m
English

Photograph by Michael Thad Carter
A smoke ring, or vortex, is a beguiling thing to watch: a coherent, moving structure made out of thin air. Here are 3 cannons that can throw these “chunks of air” across a room.
I’d been aware of vortex cannons for quite some time, mostly as an interesting toy, and after I kept stumbling on the concept while touring the web, I decided I had to build my own. There’s something fascinating about taking a substance as ubiquitous and amorphous as air and transforming it into a coherent and persistent structure, almost like a crystal. I also hoped to find some use for my cannon, ...
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