Construct a DIY smoke ring shooter for air vortex fun. Republican Infighting Breaks Out in Florida Here's the Average Social Security Benefit at Ages 62, 67, and 70 Huge burger chain franchisee files ...

"Here, we report that microwave toroidal pulses can be launched by a transient finite-aperture broadband horn antenna emitter, as an electromagnetic counterpart of 'air vortex cannon'," an ...

He used four valves all plumbed together to provide the volume of air needed. Additionally ... [Tom] tweaked and iterated his way to a working vortex cannon and has continued to refine his ...

Using an air vortex cannon strapped to a bass reflex port to wiggle a flame to death. (Credit: The Action Lab) Using a fairly beefy speaker to blast a 70 Hz tone at a big alcohol flame was not ...