Physicists discover ‘smoke rings’ made of laser light
3-D ring structures made by high-intensity lasers could aid the design of powerful microscopes and more efficient telecommunication lines
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 window with high-intensity laser light.
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