http://www.newscientist.com/article/dn16936-curved-laser-beams-could-hel...
Scanned by: Alvis Brigisover 3 years ago
Lasers may have thousands of applications in every section of modern society, but all laser beams are fundamentally similar – single-coloured and straight.
Now, US physicists have helped to break that mould by creating the first curved laser beams. The feat could one day help guide lightning to the ground.