Dark Matter and Dark Energy make up most of the known universe, but why do we understand so little about what these concepts actually are and what they do?
In Our Time: Science - Imaginary Numbers
Melvyn Bragg grapples with the concept of imaginary numbers. Perplexing digits that underpin the majority of technology we take for granted today, from radios to computers to MRI scans; not to mention quantum mechanics. Melvyn is joined by Marcus du Sautoy, Professor of Mathematics at Oxford Univers...