Vortex guns capable of firing doughnut-shaped rings of air have sat around as toys or oddball gadgets for years. Now a U.S. lab has added an extra kick with electrically charged rings that could clear ...

Those in the defense business, for obvious reasons, are increasingly getting a lot of flack for producing what some would consider instruments of death. That's why, as of late, there's been a growing ...

To see the gun in action, go to http://tinyurl.com/8xu2npq Engineers at the Battelle Memorial Institute are patenting a special vortex gun they developed. It might ...

Knotted vortex Two US researchers have effectively created "smoke rings" in water and knotted them together for the first time. The development, reported today in Nature Physics, opens the path to new ...

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