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The book begins with three introductory chapters that provide some basic physics and explain the principles of physical investigation. The principal material contained in the main part of the book covers the neutral and ionized upper atmosphere, the magnetosphere, and structures, dynamics, disturbances, and irregularities. The concluding chapter deals with technological applications. The account is introductory, at a level suitable for readers with a basic background in engineering or physics. The intent is to present basic concepts, and for that reason, the mathematical treatment is not...

J.H. Whitley came from an established business family in Halifax, where he engaged in youth work and municipal politics before becoming MP for Halifax from 1900 to 1928. He was a Liberal Radical who worked with Labour, gave his name to the industrial councils of the First World War, was Speaker of the House of Commons 1921-28 presiding over the debates at the time of the General Strike of 1926. In 1929-31 he toured India as chairman of the Royal Commission on Indian Labour and was chairman of the BBC between 1930 and 1935.

He was thus a vitally important political figure who was...