Air vortex cannon

The vortices can ruffle hair, disturb papers or blow out candles after travelling several metres.

[3] Air cannons are used in some amusement parks such as Universal Studios to spook or surprise visitors.

[citation needed] The Wham-O Air Blaster toy introduced in 1965 could blow out a candle at 25 feet (7.6 m).

[6][7] In 2012, a large air vortex cannon was built for Czech Television program Zázraky přírody (lit.

It was capable of bringing down a wall of cardboard boxes from 100 metres (330 ft) in what was claimed to be a world record.