So, it's been a week since the majority of the UK were blessed with a sky full of aurora borealis... except those of us who were fast asleep! The most common question I've been asked (apart from whether I saw them!) was why the colours of the Northern Lights were much more visible through a phone camera than with the naked eye. Let's dig into the anatomy of how our eyes work, and process light, to better understand why our phone cameras have the upper hand... The human eye ha