Mexican physicist cracks 2,000-year-old maths problem.

Rafael G. González-Acuña, a physicist and doctoral student has solved a problem that Isaac Newton couldn’t, and was assumed to be unsolvable: spherical aberration. This is when images produced through lenses (telescopes, cameras, etc.) are razor-sharp in the centre but softer at the corners and edges. The incredible mathematical formula González-Acuña developed will revolutionise how lenses are manufactured so images will be razor-sharp all over.