Jemma Lawrence, an alumni of the University of Newcastle, threw on her manically colourful lab coat and aimed the toroidal vortex cannon from a distance of about 12ft. The cannon shoots puffs of air that are visible if she pumps a small amount of liquid nitrogen fog into the canister that looks like a big plastic hairdryer.
When the puff hits your chest, you feel it, like a gentle focussed nudge. It's an uncanny, unexpected feeling; unfamiliar to wind. The air cannon is like a lot of toys on display that take something commonplace and make it different, but this one was Jemma's favourite.
