Physicists discover ‘smoke rings’ made of laser light
Friday, September 9, 2016 - 00:31
in Physics & Chemistry
Most basic physics textbooks describe laser light in fairly simple terms: a beam travels directly from one point to another and, unless it strikes a mirror or other reflective surface, will continue traveling along an arrow-straight path, gradually expanding in size due to the wave nature of light. But these basic rules go out the […]