And then there was light. Do you understand what light is? Do you really know how it’s produced, how we see it and why it’s so important to the world around us? And colour: how exactly is colour related to light and why is it so essential to us? This lecture will take you on a journey of scientific understanding. It will not only describe and illustrate the basic concepts of the science of light and colour, it will also explain how technology is making the most of light’s astonishing properties.