For many Class 12 students, Ray Optics marks the point where Physics begins to feel overwhelming. The chapter introduces mirrors, lenses, refraction and optical instruments, all packed with formulas, ...

Scientists at the X-ray free-electron laser SwissFEL have realized a long-pursued experimental goal in physics: to show how electrons dance together. The technique, known as X-ray four-wave mixing, ...

New experiments are pushing our understanding of light and optics to the limit and are also opening up new areas of physics and novel applications. (Picture credit: Photodisc) Optics has always been ...