This looks like harmless fun: Building one’s own “vortex cannon.”
Vortex cannon
- Post author:Erich Vieth
- Post published:March 22, 2012
- Post category:Science
- Post comments:2 Comments
Erich Vieth
Erich Vieth is an attorney focusing on civil rights (including First Amendment), consumer law litigation and appellate practice. At this website often writes about censorship, corporate news media corruption and cognitive science. He is also a working musician, artist and a writer, having founded Dangerous Intersection in 2006. Erich lives in St. Louis, Missouri with his two daughters.
The movie is already gone, but here is another one:
Another try:
From Make Magazine, two smoke ring cannons.