
Just as in the first episode, the documentary used the resources of the Wellcome Library to illuminate figures from the History of Science.
In this second episode, Prof Jim al-Khalili and Dr Nader el-Bizri, visit the Library to investigate the work and legacy of Ibn al-Haytham.
In particular they discuss his groundbreaking research into light and optics and also the claims that al-Haytham was the instigator of what we now call the scientific method.
More details on how to listen again to the series are available on the World Service website.