Although the product of a self-proclaimed consensus politics, the British Empire was always based on communications supremacy and the knowledge of the atmosphere. Using the metaphor of a thread of five pieces representing the categories science, industry, government, the military, and the education, this is the first book to study the relations between wireless and Empire throughout the interwar period. It is also the first to make full use of the abundant archive material and rich sources existing in Britain and the Dominions. The book examines the evolving connection between the development of imperial radio communications and atmospheric physics; the expansion and strength of the British radio industry and its relationship with the elucidation of the ionosphere; and the different extent to which Australia, Canada and New Zealand managed to emulate the British model of radio R&D in the interwar years. The book ends with a highly original and provocative epilogue: 'The realist interpretation of the atmosphere'.

Weather forecasting is the most visible branch of meteorology and has its modern roots in the nineteenth century when scientists redefined meteorology in the way weather forecasts were made, developing maps of isobars, or lines of equal atmospheric pressure, as the main forecasting tool. This book is the history of how weather forecasting was moulded and modelled by the processes of nation-state building and statistics in the Western world.

Weather forecasting is the most visible branch of meteorology and has its modern roots in the nineteenth century when scientists redefined meteorology in the way weather forecasts were made, developing maps of isobars, or lines of equal atmospheric pressure, as the main forecasting tool. This book is the history of how weather forecasting was moulded and modelled by the processes of nation-state building and statistics in the Western world.

Did industry and commerce affect the concepts, values and epistemic foundations of different sciences? If so, how and to what extent? This book suggests that the most significant influence of industry on science in the two case studies treated here had to do with the issue of realism. Using wave propagation as the common thread, this is the first book to simultaneously analyse the emergence of realist attitudes towards the entities of the ionosphere and of the earth's crust. However, what led physicists and engineers to adopt realist attitudes? This book suggests that a new kind of realism -a realism of social and cultural origins- is the answer: a preliminary, entity realism responding to specific commercial and engineering interests, and a realism that was neither strictly instrumental nor exclusively operational. The book has two parts: while Part I focuses on the study of the ionosphere and how the British radio industry affected ionospheric physics, Part II focuses on the study of the Earth's crust and how the American oil industry affected crustal seismology.