Swiss researchers break record for shortest-ever light pulse
Swiss researchers have generated the world's shortest laser pulse, a 43-attosecond X-ray flash, beating the 53-attosecond record set by the US earlier this year. Light at 3 lakh km/sec covers less than one-thousandth of hair-width during 43 attoseconds, making the pulse the shortest man-made controlled event. Such lasers allow observing electron movement during chemical reactions in slow motion.